BTS Statistics Release: September 2017 U.S. Airline Traffic Data

By Newsroom America Feeds at 14 Dec 2017

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BTS 59-17

Thursday, December 14, 2017

BTS Contact: Dave Smallen

Tel: 202-366-5568

david.smallen@dot.gov

BTS Statistics Release: September 2017 U.S. Airline Traffic Data

The U.S. Department of Transportations Bureau of Transportation Statistics (BTS) reported today that U.S. airlines September systemwide (domestic and international) scheduled service passenger enplanements fell 3.1 percent from August, falling for the second consecutive month to 68.6 million, seasonally-adjusted (Table 1).

Fig1

From August to September 2017, enplanements on domestic flights declined 3.0 percent while international enplanements to and from the U.S. fell 3.8 percent, resulting in a 3.1 percent systemwide decline (Tables 1, 2, 3).

In one year, from September 2016 September 2017, enplanements on domestic flights declined 1.6 percent while enplanements on U.S. airlines international flights to and from the U.S. fell 0.4 percent, resulting in a 1.4 percent systemwide decline (Tables 1, 2, 3).

In three years, from September 2014 to September 2017, enplanements on domestic flights increased 8.0 percent while international enplanements rose 4.3 percent, resulting in a 7.5 percent systemwide increase (Tables 1, 2, 3).

Unadjusted systemwide, domestic and international enplanements were below the all-time highs for the month of September (Tables 13, 14, 15).

*Trends *(Percent changes based on unrounded numbers)

*Seasonally-adjusted*

Systemwide passenger enplanements (68.6 million) were down 3.8 percent from the all-time seasonally-adjusted high (71.4 million) reached in July 2017 (Table 1). Domestic passenger enplanements (60.0 million) were down 3.7 percent from the all-time seasonally-adjusted high (62.3 million) reached in July 2017 (Table 2). International passenger enplanements (8.6 million) were down 5.2 percent from the all-time seasonally-adjusted high (9.1 million) reached in April 2017 (Table 3).

* *

Systemwide revenue passenger miles (RPMs) (78.4 billion) were down 3.4 percent from the all-time seasonally-adjusted high (81.1 billion) reached in July 2017 (Table 4). Domestic RPMs (55.4 billion) were down 3.9 percent from the all-time seasonally-adjusted high (57.7 billion) reached in July 2017 (Table 5). International RPMs (23.0 billion) were down 3.3 percent from the all-time seasonally-adjusted high (23.7 billion) reached in April 2017 (Table 6).

Systemwide available seat-miles (ASMs) (95.1 billion) were down 2.0 percent from the all-time seasonally-adjusted high (97.0 billion) reached in July 2017 (Table 7). Domestic ASMs (66.4 billion) were down 2.5 percent from the all-time seasonally-adjusted high (68.2 billion) reached in August 2017 (Table 8). International ASMs (28.7 billion) were down 1.3 percent from the all-time seasonally-adjusted high (29.0 billion) reached in June 2017 (Table 9).

Systemwide load factor (82.4) was down 2.4 points from the all-time seasonally-adjusted high (84.8) reached in October 2015 (Table 10). Domestic load factor (83.4) was down 2.6 points from the all-time seasonally-adjusted high (86.0) reached in October 2015 (Table 11). International load factor (80.1) was down 2.9 points from the all-time seasonally-adjusted high (83.0) reached in March 2013 (Table 12).

Load factor is a measure of the use of aircraft capacity that compares the system use, measured in RPMs as a proportion of system capacity, measured ASMs.

The seasonally-adjusted load factor fell from August (83.2) to September (82.4) because system capacity fell (2.0 percent decline in ASMs) less than passenger travel (2.9 percent decline in RPMs) (Tables 4, 7).

**

Seasonally adjusted trends are for the time period January 2000 to present. Additional data, including domestic and international numbers, can be found on the seasonally-adjusted data http://www.transtats.bts.gov/osea/seasonaladjustment/?PageVar=ASM page.

*Unadjusted*

**

Fig2

**

Systemwide passenger enplanements (64.9 million) were down 2.4 percent from the all-time September high (66.5 million) reached in 2016 (Table 13). Domestic passenger enplanements (57.1 million) were down 2.6 percent from the all-time September high (58.6 million) reached in 2016 (Table 14). International passenger enplanements (7.8 million) were down 1.1 percent from the all-time September high (7.9 million) reached in 2016 (Table 15).

Systemwide RPMs (74.6 billion) were down 0.9 percent from the all-time September high (75.3 billion) reached in 2016 (Table 16). Domestic RPMs (51.9 billion) were down 1.5 percent from the all-time September high (52.7 billion) reached in 2016 (Table 17). International RPMs (22.8 billion) reached an all-time September high, up 0.5 percent from the previous high (22.7 billion) reached in 2016 (Table 18).

Systemwide ASMs (91.4 billion) reached an all-time September high, up 1.1 percent from the previous high (90.4 billion) reached in 2016 (Table 19). Domestic ASMs (63.1 billion) reached an all-time September high, up 1.0 percent from the previous high (62.5 billion) reached in 2016 (Table 20). International ASMs (28.3 billion) reached an all-time September high, up 1.3 percent from the previous high (27.9 billion) reached in 2016 (Table 21).

**

Systemwide load factor (81.6) was down 1.6 points from the all-time September high (83.3) reached in 2016 (Table 22). Domestic load factor (82.2) was down 2.1 points from the all-time September high (84.2) reached in 2016 (Table 23). International load factor (80.5) was down 3.1 points from the all-time September high (83.6) reached in 2010 (Table 24).

The unadjusted load factor fell from September 2016 (83.3) to September 2017 (81.6) because system capacity rose (1.1 percent increase in ASMs) while passenger travel declined (0.9 percent decrease in RPMs) (Tables 16, 19).

* *

Unadjusted trends are for the time period January 1996 to present. Data are available at Customize Table http://apps.bts.gov/xml/air_traffic/src/index.xml#CustomizeTable_ _and can be downloaded from the seasonally-adjusted data http://www.transtats.bts.gov/osea/seasonaladjustment/?PageVar=ASM page.

*Explanation of seasonal adjustment*

When the primary purpose is to examine monthly shifts in transportation services output and analyze short-term trends, the variation introduced by normal seasonal changes must be removed from the data. Transportation is highly seasonal, and without adjustment, the data do not give an accurate picture of underlying changes in aviation, passenger travel.

Seasonal adjustment of the data removes the seasonal events that follow a regular seasonal pattern. Changes that are not due to seasonality, such as a change in air travel resulting from economic conditions become more readily apparent.

The aviation data are seasonally adjusted for the effects of trading day, moving holidays, and data outliers.

See Seasonal Adjustment http://www.rita.dot.gov/bts/sites/rita.dot.gov.bts/files/subject-areas/economics_and_finance/transportation_services_index for methodology and additional explanation.

**

*Reporting Notes*

Data are compiled from monthly reports filed with BTS by commercial U.S. air carriers detailing operations, passenger traffic and freight traffic. This release includes data received by BTS from 83 carriers as of Dec. 5 for U.S. carrier *scheduled* civilian operations.

Go to http://www.transtats.bts.gov/releaseinfo.asp for the complete list of reporting and non-reporting carriers. U.S. carriers foreign point-to-point flights are included in system and international totals. To create a customized table for passengers, flights, RPMs, ASMs and other data, including non-scheduled service, go to http://apps.bts.gov/xml/air_traffic/src/index.xml#CustomizeTable

For additional scheduled service numbers for U.S. and foreign airlines, by airline and by airport, see Passengers http://www.transtats.bts.gov/Data_Elements.aspx?Data=1, Flights http://www.transtats.bts.gov/Data_Elements.aspx?Data=2, Revenue Passenger-Miles http://www.transtats.bts.gov/Data_Elements.aspx?Data=3, Available Seat-Miles http://www.transtats.bts.gov/Data_Elements.aspx?Data=4 and Load Factor http://www.transtats.bts.gov/Data_Elements.aspx?Data=5.

Traffic numbers are available on the BTS website at TranStats, the Intermodal Transportation Database, at http://transtats.bts.gov http://transtats.bts.gov/. Click on Aviation. For systemwide passengers, RPMs and ASMs by carrier through September, click on Air Carrier Summary Data (Form 41 and 298C Summary Data), and then click on Schedule T-1. Use crosstabs to find scheduled service.

For domestic numbers through September and international numbers through June by origin as well as by carrier, click on Aviation, then click on Air Carrier Statistics (Form 41 Traffic). Click on T-100 Market for system passenger numbers, T-100 Domestic Market for domestic or T-100 International Market for international. For flights, stage length and trip length, use the appropriate T-100 Segment database. Use crosstabs to find scheduled service.

International totals in this press release consist of all U.S. carrier operations to and from the U.S. and from one foreign point to another foreign point. TranStats T-100 systemwide and international totals do not include U.S. carriers foreign point-to-point flights. For September, U.S. carriers reported 45,771 foreign point-to-point passengers. For January through September, U.S. carriers reported 504,230 foreign point-to-point passengers.

Data are subject to revision. BTS has scheduled Jan. 12 for the release of October traffic data. None of the data are from samples so measures of statistical significance do not apply.

**

*Seasonally-Adjusted Tables*

**

*Passenger Enplanements on U.S. Airlines, Seasonally-Adjusted (Tables 1-3)*

**

*Table 1. Systemwide Passenger Enplanements on U.S. Airlines, Seasonally-Adjusted*

Systemwide (Domestic + International) passenger enplanements (seasonally adjusted) in millions (000,000)

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

62.87

64.89

67.75

69.64

February

63.17

65.09

67.76

69.60

March

63.96

65.63

67.11

69.75

April

63.52

65.68

67.87

70.25

May

63.41

65.80

68.51

70.61

June

63.24

65.94

68.59

70.50

July

63.57

66.79

68.15

71.37

August

63.47

67.22

67.68

70.82

September

63.83

67.48

69.61

68.62

October

63.69

68.12

69.52

November

64.14

67.66

69.78

December

64.31

68.17

69.01

Source: Bureau of Transportation Statistics, T-100 Market

*Table 2. Domestic Passenger Enplanements on U.S. Airlines, Seasonally-Adjusted*

Domestic passenger enplanements (seasonally adjusted) in millions (000,000)

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

54.54

56.46

59.09

60.76

February

54.84

56.64

59.08

60.75

March

55.58

57.20

58.46

60.88

April

55.11

57.32

59.32

61.14

May

55.03

57.39

59.98

61.57

June

54.90

57.51

59.97

61.49

July

55.27

58.26

59.55

62.32

August

55.17

58.61

59.12

61.84

September

55.55

58.84

60.93

59.98

October

55.47

59.48

60.84

November

55.80

58.98

61.04

December

55.93

59.48

60.18

Source: Bureau of Transportation Statistics, T-100 Domestic Market

**Table 3. International Passenger Enplanements on U.S. Airlines, Seasonally-Adjusted**

International passenger enplanements (seasonally adjusted) in millions (000,000)

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

8.34

8.43

8.65

8.88

February

8.33

8.45

8.68

8.85

March

8.37

8.43

8.65

8.87

April

8.41

8.36

8.55

9.11

May

8.38

8.40

8.54

9.04

June

8.34

8.42

8.62

9.01

July

8.30

8.53

8.61

9.05

August

8.30

8.61

8.56

8.98

September

8.28

8.63

8.68

8.64

October

8.22

8.64

8.69

November

8.34

8.68

8.74

December

8.39

8.69

8.83

Source: Bureau of Transportation Statistics, T-100 International Market

**Revenue Passenger-Miles on U.S. Airlines, Seasonally-Adjusted (Tables 4-6)**

*Table 4. Systemwide Revenue Passenger-Miles (RPMs) on U.S. Airlines, Seasonally-Adjusted*

Systemwide (Domestic + International) RPMs (seasonally-adjusted) in billions (000,000,000)

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

71.1

73.2

76.6

79.2

February

71.4

73.6

76.9

78.6

March

72.2

74.4

76.4

79.3

April

71.7

73.9

77.0

80.2

May

71.8

74.5

77.4

80.3

June

71.5

74.6

77.8

80.4

July

71.6

75.5

77.6

81.1

August

71.7

75.9

76.8

80.7

September

72.1

76.1

78.7

78.4

October

72.1

77.1

78.7

November

72.5

76.5

78.9

December

73.2

77.0

79.0

Source: Bureau of Transportation Statistics, T-100 Segment

Note: Revenue passenger-miles are a measure of the volume of air passenger transportation. A revenue passenger-mile is equal to one paying passenger carried one mile.

**Table 5. Domestic Revenue Passenger-Miles (RPMs) on U.S. Airlines, Seasonally-Adjusted**

Domestic RPMs (seasonally-adjusted) in billions (000,000,000)

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

48.8

50.7

53.8

56.2

February

49.2

51.1

54.1

55.6

March

49.9

51.8

53.7

56.1

April

49.3

51.8

54.4

56.5

May

49.3

52.0

54.9

56.8

June

49.2

52.2

55.1

56.9

July

49.6

52.8

54.8

57.7

August

49.5

53.1

54.4

57.3

September

49.8

53.3

55.8

55.4

October

50.0

54.1

55.8

November

50.2

53.7

56.0

December

50.7

54.3

55.9

Source: Bureau of Transportation Statistics, T-100 Domestic Segment

Note: Revenue passenger-miles are a measure of the volume of air passenger transportation. A revenue passenger-mile is equal to one paying passenger carried one mile.

*Table 6. International Revenue Passenger-Miles (RPMs) on U.S. Airlines, Seasonally-Adjusted*

International RPMs (seasonally-adjusted) in billions (000,000,000)

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

22.3

22.5

22.8

23.1

February

22.2

22.6

22.8

23.0

March

22.3

22.6

22.7

23.1

April

22.4

22.2

22.6

23.7

May

22.5

22.5

22.5

23.5

June

22.3

22.5

22.8

23.6

July

22.0

22.8

22.8

23.4

August

22.2

22.9

22.5

23.4

September

22.2

22.8

22.9

23.0

October

22.1

22.9

22.9

November

22.3

22.8

22.9

December

22.4

22.8

23.1

Source: Bureau of Transportation Statistics, T-100 International Segment

Note: Revenue passenger-miles are a measure of the volume of air passenger transportation. A revenue passenger-mile is equal to one paying passenger carried one mile.

**

*Available Seat-Miles on U.S. Airlines, Seasonally-Adjusted (Tables 7-9)*

*Table 7. Systemwide Available Seat-Miles (ASMs) on U.S. Airlines, Seasonally-Adjusted*

Systemwide (Domestic + International) ASMs (seasonally-adjusted) in billions (000,000,000)

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

84.3

88.3

91.4

95.1

February

85.1

87.6

92.1

94.9

March

86.4

88.8

92.7

95.1

April

85.5

89.4

92.4

95.6

May

85.6

89.6

93.0

95.8

June

86.1

89.4

93.1

96.6

July

86.2

90.2

93.2

97.0

August

86.2

90.5

93.3

97.0

September

86.6

90.5

93.9

95.1

October

87.1

90.9

93.8

November

87.5

91.2

93.5

December

88.2

91.6

94.4

Source: Bureau of Transportation Statistics, T-100 Segment

Note: Available seat-miles are a measure of the capacity of air passenger transportation. An available seat-mile is equal to one aircraft seat carried one mile.

***Table 8. Domestic Available Seat-Miles (ASMs) on U.S. Airlines, Seasonally-Adjusted***

Domestic ASMs (seasonally-adjusted) in billions (000,000,000)

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

57.3

60.5

63.3

66.6

February

57.9

60.0

64.0

66.4

March

58.8

60.9

64.4

66.5

April

58.3

61.5

64.3

66.8

May

58.1

61.8

64.7

66.9

June

58.4

61.6

64.9

67.6

July

58.6

62.1

65.0

68.0

August

58.7

62.3

65.1

68.2

September

59.1

62.4

65.5

66.4

October

59.6

62.9

65.5

November

59.7

63.2

65.7

December

60.4

63.3

66.0

Source: Bureau of Transportation Statistics, T-100 Domestic Segment

Note: Available seat-miles are a measure of the capacity of air passenger transportation. An available seat-mile is equal to one aircraft seat carried one mile.

****

*Table 9. International Available Seat-Miles (ASMs) on U.S. Airlines, Seasonally-Adjusted*

International ASMs (seasonally-adjusted) in billions (000,000,000)

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

27.0

27.8

28.1

28.5

February

27.2

27.6

28.1

28.6

March

27.7

27.8

28.2

28.6

April

27.3

27.9

28.1

28.9

May

27.4

27.8

28.2

29.0

June

27.7

27.8

28.2

29.0

July

27.6

28.1

28.2

29.0

August

27.5

28.1

28.2

28.8

September

27.4

28.2

28.3

28.7

October

27.5

27.9

28.4

November

27.8

27.9

27.8

December

27.8

28.2

28.4

Source: Bureau of Transportation Statistics, T-100 International Segment

Note: Available seat-miles are a measure of the capacity of air passenger transportation. An available seat-mile is equal to one aircraft seat carried one mile.

*Load Factor on U.S. Airlines, Seasonally-Adjusted (Tables 10-12)*

**

*Table 10. Systemwide Load Factor on U.S. Airlines, Seasonally-Adjusted*

Systemwide (Domestic + International) RPMs/ASMs (both seasonally-adjusted) in percent

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

84.3

83.0

83.8

83.4

February

83.9

84.0

83.5

82.8

March

83.5

83.9

82.5

83.3

April

83.8

82.7

83.3

83.9

May

84.0

83.1

83.3

83.7

June

83.0

83.5

83.6

83.3

July

83.0

83.8

83.3

83.6

August

83.2

83.9

82.3

83.2

September

83.2

84.1

83.8

82.4

October

82.8

84.8

83.8

November

82.8

83.9

84.4

December

83.0

84.1

83.7

Source: Bureau of Transportation Statistics, T-100 Segment

Note: Load factor is a measure of the use of aircraft capacity that compares Revenue Passenger-Miles (RPMs) as a proportion of Available Seat-Miles (ASMs).

***Table 11. Domestic Load Factor on U.S. Airlines, Seasonally-Adjusted***

Domestic RPMs/ASMs (both seasonally-adjusted) in percent

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

85.3

83.9

85.0

84.4

February

85.0

85.2

84.6

83.7

March

85.0

85.1

83.4

84.4

April

84.6

84.3

84.7

84.6

May

84.8

84.1

84.8

84.9

June

84.2

84.7

84.8

84.2

July

84.5

84.9

84.3

84.8

August

84.4

85.1

83.5

84.0

September

84.3

85.5

85.1

83.4

October

83.8

86.0

85.2

November

84.1

84.9

85.3

December

84.1

85.7

84.7

Source: Bureau of Transportation Statistics, T-100 Domestic Segment

Note: Load factor is a measure of the use of aircraft capacity that compares Revenue Passenger-Miles (RPMs) as a proportion of Available Seat-Miles (ASMs).

*Table 12. International Load Factor on U.S. Airlines, Seasonally-Adjusted*

International RPMs/ASMs (both seasonally-adjusted) in percent

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

82.4

80.9

81.1

81.0

February

81.6

81.6

80.9

80.7

March

80.5

81.1

80.4

80.8

April

82.2

79.3

80.2

82.3

May

82.2

80.9

79.9

81.1

June

80.6

80.8

80.8

81.2

July

79.7

81.2

80.9

80.9

August

80.7

81.3

79.7

81.3

September

81.0

81.0

80.8

80.1

October

80.6

82.1

80.6

November

80.1

81.5

82.3

December

80.7

80.7

81.2

Source: Bureau of Transportation Statistics, T-100 International Segment

Note: Load factor is a measure of the use of aircraft capacity that compares Revenue Passenger-Miles (RPMs) as a proportion of Available Seat-Miles (ASMs).

**

*Unadjusted Tables*

**

*Passenger Enplanements on U.S. Airlines, Unadjusted (Tables 13-15)*

**

*Table 13. Systemwide Passenger Enplanements on U.S. Airlines, Unadjusted*

Systemwide (Domestic + International) passenger enplanements (unadjusted) in millions (000,000)

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

55.81

57.78

60.81

62.60

February

52.44

54.16

58.49

58.35

March

66.44

68.20

70.56

72.69

April

63.49

65.92

67.24

70.20

May

66.51

68.93

71.51

73.61

June

68.60

71.27

74.50

76.94

July

71.89

75.63

76.88

79.78

August

69.53

72.87

73.45

77.07

September

59.99

63.74

66.47

64.89

October

64.49

68.73

69.54

November

59.74

64.59

66.59

December

63.78

66.40

66.93

*9 Mo. Total*

*574.70*

*598.50*

*619.91*

*636.13*

*Yr. Total*

*762.71*

*798.22*

*822.97*

Source: Bureau of Transportation Statistics, T-100 Market

*Table 14. Domestic Passenger Enplanements on U.S. Airlines, Unadjusted*

Domestic passenger enplanements (unadjusted) in millions (000,000)

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

47.96

49.73

52.47

54.09

February

45.51

47.17

51.11

51.05

March

57.76

59.56

61.59

63.69

April

55.25

57.70

58.89

61.04

May

57.89

60.25

62.75

64.38

June

59.26

61.81

64.75

66.68

July

61.76

65.13

66.13

68.54

August

59.76

62.77

63.50

66.63

September

52.53

55.99

58.62

57.12

October

57.08

60.89

61.71

November

52.58

57.15

59.27

December

55.49

57.87

58.22

*9 Mo. Total*

*497.68*

*520.11*

*539.81*

*553.22*

*Yr. Total*

*662.83*

*696.02*

*719.01*

Source: Bureau of Transportation Statistics, T-100 Domestic Market

**

*Table 15. International Passenger Enplanements on U.S. Airlines, Unadjusted*

International passenger enplanements (unadjusted) in millions (000,000)

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

7.85

8.06

8.33

8.51

February

6.93

7.00

7.38

7.30

March

8.68

8.64

8.96

9.00

April

8.24

8.22

8.34

9.16

May

8.62

8.67

8.76

9.24

June

9.34

9.46

9.74

10.26

July

10.13

10.50

10.75

11.24

August

9.77

10.09

9.95

10.44

September

7.46

7.75

7.86

7.77

October

7.41

7.84

7.83

November

7.16

7.44

7.32

December

8.29

8.53

8.71

*9 Mo. Total*

*77.02*

*78.39*

*80.07*

*82.92*

*Yr. Total*

*99.88*

*102.20*

*103.93*

**

Source: Bureau of Transportation Statistics, T-100 International Market

*Revenue Passenger-Miles on U.S. Airlines, Unadjusted (Tables 16-18)*

*Table 16. Systemwide Revenue Passenger-Miles (RPMs) on U.S. Airlines, Unadjusted*

Systemwide (Domestic + International) RPMs (unadjusted) in billions (000,000,000)

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

64.1

66.0

69.3

71.4

February

57.9

59.8

64.6

64.2

March

73.6

75.8

78.7

80.6

April

70.7

73.1

75.1

79.5

May

75.2

78.0

80.8

83.5

June

79.5

82.7

86.5

89.7

July

83.7

88.3

90.6

94.1

August

81.2

85.2

86.1

90.4

September

68.4

72.5

75.3

74.6

October

71.3

76.1

77.3

November

65.2

70.0

72.2

December

71.8

74.8

77.0

*9 Mo. Total*

*654.3*

*681.3*

*707.0*

*728.0*

*Yr. Total*

*862.5*

*902.2*

*933.5*

**

Source: Bureau of Transportation Statistics, T-100 Segment

Note: Revenue passenger-miles are a measure of the volume of air passenger transportation. A revenue passenger-mile is equal to one paying passenger carried one mile.

**

****

*Table 17. Domestic Revenue Passenger-Miles (RPMs) on U.S. Airlines, Unadjusted*

Domestic RPMs (unadjusted) in billions (000,000,000)

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

43.6

45.1

48.1

50.1

February

40.5

42.3

46.5

46.5

March

51.9

53.9

56.7

58.5

April

49.3

51.9

53.6

56.3

May

51.5

54.3

57.1

59.0

June

54.0

57.0

60.3

62.5

July

56.9

60.4

62.4

65.0

August

54.6

57.8

59.3

62.5

September

46.3

49.9

52.7

51.9

October

50.1

54.1

55.3

November

46.4

50.9

53.3

December

50.3

53.1

54.8

*9 Mo. Total*

*448.6*

*472.6*

*496.6*

*512.2*

*Yr. Total*

*595.3*

*630.7*

*660.0*

**

Source: Bureau of Transportation Statistics, T-100 Domestic Segment

Note: Revenue passenger-miles are a measure of the volume of air passenger transportation. A revenue passenger-mile is equal to one paying passenger carried one mile.

**

**

*Table 18. International Revenue Passenger-Miles (RPMs) on U.S. Airlines, Unadjusted*

International RPMs (unadjusted) in billions (000,000,000)

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

20.5

20.8

21.2

21.3

February

17.3

17.5

18.1

17.8

March

21.8

21.8

22.0

22.0

April

21.5

21.2

21.5

23.2

May

23.7

23.8

23.7

24.5

June

25.5

25.7

26.2

27.2

July

26.8

27.8

28.3

29.1

August

26.6

27.4

26.9

27.9

September

22.1

22.6

22.7

22.8

October

21.2

22.0

22.0

November

18.8

19.1

18.9

December

21.5

21.7

22.2

*9 Mo. Total*

*205.7*

*208.8*

*210.4*

*215.8*

*Yr. Total*

*267.2*

*271.6*

*273.5*

**

Source: Bureau of Transportation Statistics, T-100 International Segment

Note: Revenue passenger-miles are a measure of the volume of air passenger transportation. A revenue passenger-mile is equal to one paying passenger carried one mile.

**

**

*Available Seat-Miles on U.S. Airlines, Unadjusted (Tables 19-21)*

**

*Table 19. Systemwide Available Seat-Miles (ASMs) on U.S. Airlines, Unadjusted*

Systemwide (Domestic + International) ASMs (unadjusted) in billions (000,000,000)

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

79.8

83.4

86.3

90.0

February

72.5

74.5

81.9

81.4

March

88.2

90.3

94.2

96.5

April

84.8

88.6

91.6

94.8

May

88.5

92.8

96.4

99.4

June

92.0

95.7

99.9

103.7

July

96.5

101.0

104.4

108.6

August

94.0

98.6

101.8

105.8

September

83.5

87.3

90.4

91.4

October

86.1

89.5

92.2

November

81.7

84.9

86.9

December

86.8

90.3

93.0

*9 Mo. Total*

*779.8*

*812.2*

*846.9*

*871.6*

*Yr. Total*

*1,034.4*

*1,076.9*

*1,119.0*

**

Source: Bureau of Transportation Statistics, T-100 Segment

Note: Available seat-miles are a measure of the capacity of air passenger transportation. An available seat-mile is equal to one aircraft seat carried one mile.

****

*Table 20. Domestic Available Seat-Miles (ASMs) on U.S. Airlines, Unadjusted*

Domestic ASMs (unadjusted) in billions (000,000,000)

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

54.0

57.0

59.7

63.1

February

49.4

51.3

57.5

57.4

March

60.7

62.9

66.5

68.5

April

58.0

61.1

63.8

66.1

May

59.7

63.4

66.5

68.8

June

61.8

65.2

68.8

71.7

July

64.8

68.6

71.5

74.8

August

62.9

66.7

70.0

73.2

September

56.5

59.5

62.5

63.1

October

59.6

62.6

64.8

November

56.9

60.5

62.9

December

60.3

63.2

65.7

*9 Mo. Total*

*527.8*

*555.7*

*586.8*

*606.8*

*Yr. Total*

*704.6*

*742.0*

*780.2*

Source: Bureau of Transportation Statistics, T-100 Domestic Segment

Note: Available seat-miles are a measure of the capacity of air passenger transportation. An available seat-mile is equal to one aircraft seat carried one mile.

**

*Table 21. International Available Seat-Miles (ASMs) on U.S. Airlines, Unadjusted*

International ASMs (unadjusted) in billions (000,000,000)

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

25.8

26.4

26.7

26.9

February

23.1

23.3

24.5

23.9

March

27.5

27.5

27.7

28.0

April

26.8

27.5

27.8

28.7

May

28.8

29.4

29.8

30.6

June

30.2

30.5

31.1

32.0

July

31.7

32.4

32.9

33.8

August

31.1

31.9

31.9

32.6

September

27.0

27.8

27.9

28.3

October

26.5

27.0

27.4

November

24.7

24.5

24.0

December

26.6

27.0

27.3

*9 Mo. Total*

*252.0*

*256.7*

*260.3*

*264.8*

*Yr. Total*

*329.8*

*335.2*

*339.0*

Source: Bureau of Transportation Statistics, T-100 International Segment

Note: Available seat-miles are a measure of the capacity of air passenger transportation. An available seat-mile is equal to one aircraft seat carried one mile.

**

*Load Factor on U.S. Airlines, Unadjusted (Tables 22-24)*

**

*Table 22. **Systemwide Load Factor on U.S. Airlines, Unadjusted*

Systemwide (Domestic + International) RPMs/ASMs (both unadjusted) in percent

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

80.3

79.1

80.2

79.4

February

79.8

80.2

78.8

79.0

March

83.5

83.9

83.6

83.5

April

83.4

82.5

82.0

83.9

May

85.0

84.1

83.8

84.0

June

86.4

86.4

86.6

86.4

July

86.7

87.4

86.8

86.6

August

86.5

86.4

84.6

85.5

September

81.9

83.0

83.3

81.6

October

82.8

85.0

83.8

November

79.8

82.4

83.1

December

82.6

82.9

82.8

*9 Mo. Value*

*83.9*

*83.9*

*83.5*

*83.5*

*Yr. Value*

*83.4*

*83.8*

*83.4*

Source: Bureau of Transportation Statistics, T-100 Segment

Note: Load factor is a measure of the use of aircraft capacity that compares Revenue Passenger-Miles (RPMs) as a proportion of Available Seat-Miles (ASMs).

**

*Table 23. **Domestic Load Factor on U.S. Airlines, Unadjusted*

Domestic RPMs/ASMs (both unadjusted) in percent

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

80.7

79.2

80.6

79.5

February

82.1

82.4

80.8

80.9

March

85.5

85.8

85.3

85.4

April

84.9

84.9

84.1

85.2

May

86.3

85.6

85.9

85.7

June

87.4

87.4

87.6

87.1

July

87.8

88.1

87.2

86.9

August

86.9

86.6

84.7

85.4

September

82.1

83.8

84.2

82.2

October

84.1

86.4

85.4

November

81.4

84.2

84.7

December

83.5

84.0

83.4

*9 Mo. Value*

*85.0*

*85.0*

*84.6*

*84.4*

*Yr. Value*

*84.5*

*85.0*

*84.6*

Source: Bureau of Transportation Statistics, T-100 Segment

Note: Load factor is a measure of the use of aircraft capacity that compares Revenue Passenger-Miles (RPMs) as a proportion of Available Seat-Miles (ASMs).

*Table 24. **International Load Factor on U.S. Airlines, Unadjusted*

International RPMs/ASMs (both unadjusted) in percent

Scheduled service only

*2014*

*2015*

*2016*

*2017*

January

79.6

78.8

79.5

79.2

February

75.0

75.3

73.9

74.3

March

79.2

79.5

79.4

78.7

April

80.1

77.1

77.3

80.8

May

82.3

80.8

79.3

80.1

June

84.4

84.4

84.5

84.9

July

84.4

85.8

86.0

85.9

August

85.5

86.0

84.3

85.8

September

81.6

81.4

81.1

80.5

October

79.8

81.6

80.1

November

76.2

78.1

78.9

December

80.8

80.3

81.2

*9 Mo. Value*

*81.6*

*81.3*

*80.9*

*81.5*

*Yr. Value*

*81.0*

*81.0*

*80.7*

Source: Bureau of Transportation Statistics, T-100 Segment

Note: Load factor is a measure of the use of aircraft capacity that compares Revenue Passenger-Miles (RPMs) as a proportion of Available Seat-Miles (ASMs).

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