BTS Releases April 2013 U.S. Airline Traffic Data;

System Passengers Down 0.9% from April 2012

The U.S. Department of Transportation's Bureau of Transportation Statistics (BTS) reported this week that U.S. airlines carried 61.0 million scheduled systemwide passengers in April 2013, 0.9 percent fewer than in April 2012. The systemwide decrease was the result of a 0.9 percent decrease in the number of domestic passengers (53.2 million) and a 0.6 percent decrease in international passengers (7.8 million) (Tables 1, 7, 13).

BTS, a part of the Department's Research and Innovative Technology Administration, reported that U.S. airlines carried 0.2 percent more total system (domestic + international) passengers during the first four months of 2013 (233.9 million) than during the same period in 2012 (Table 2). Domestically, U.S. airlines carried 203.3 million passengers, unchanged from 2012 (Table 8). Internationally, they carried 30.6 million passengers, up 1.5 percent from 2012 (Table 14). See Tables 2, 8 and 14 of Air Traffic Press Releases for previous-year data.

The system load factor of 81.6 percent, the domestic load factor of 82.8 percent and the international load factor of 78.8 percent all declined from April 2012 as airlines increased both domestic and international capacity (Tables 1, 7, 13). 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).

Additional traffic data can be found on the BTS Airlines and Airports page. Click on a link in the Quick Links box on the right. For more historical data, see Traffic on the BTS website.

Top Airlines

Monthly: In April, Delta Air Lines carried more system passengers than any other U.S. airline (Table 4). Southwest Airlines carried the most domestic passengers (Table 10). United Airlines carried the most international passengers (Table 16). The top 10 U.S. airlines in terms of number of passengers carried 80.8 percent of systemwide passengers, up from 79.8 percent carried by the U.S. airlines that were in the top 10 in April 2012.

Year-to-date: During the first four months of 2013, Delta carried more system passengers than any other U.S. airline (Table 3) and Southwest carried the most domestic passengers (Table 9). United carried the most international passengers (Table 15). The top 10 U.S. airlines carried 80.7 percent of systemwide passengers, up from 79.8 percent carried by the U.S. airlines that were in the top 10 during the first four months of 2012.

Top Airports

Monthly: In April, more total system and domestic passengers boarded planes at Atlanta Hartsfield-Jackson International than at any other U.S. airport (Tables 6, 12); and more international passengers boarded U.S. carriers at Miami than at any other U.S. airport (Table 18).

Year-to-date: During the first four months of 2013, more total system and domestic passengers boarded planes at Atlanta Hartsfield-Jackson than at any other U.S. airport (Tables 5 and 11); and more international passengers boarded U.S. carriers at Miami than at any other U.S. airport (Table 17).

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 73 carriers as of July 9 for U.S. carrier scheduled civilian operations.

Southwest and AirTran Airways are reporting as separate carriers with the exception of their financial reports. They have one FAA SOC (single operating certificate), requiring that they utilize the same safety/operating procedures, but they have separate DOT 401 economic certificates, meaning they remain operating as separate economic entities.

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. airlines, U.S. and foreign airlines, by airline and by airport, see Passengers, Flights, Revenue Passenger-Miles, Available Seat-Miles and Load Factor.

Traffic numbers are available on the BTS website at TranStats, the Intermodal Transportation Database, at http://transtats.bts.gov. Click on "Aviation." For system passengers, RPMs and ASMs by carrier through March, 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 April and international numbers through January by origin as well as by carrier, after clicking on "Aviation," 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 system and international totals do not include U.S. carriers' foreign point-to-point flights. For April, U.S. carriers reported 192,117 foreign point-to-point passengers. For January through April, U.S. carriers reported 785,965 foreign point-to-point passengers.

Data are subject to revision. BTS has scheduled Aug. 22 for the release of May traffic data.

Table 1. Scheduled System (Domestic and International) Airline Travel on U.S. Airlines

Source: Bureau of Transportation Statistics, T-100 Market and Segment

* Change in load factor points

** The average non-stop distance flown per departure in miles

*** The average distance flown per passenger in miles

Note: Percentage changes based on numbers prior to rounding.

Table 2. Total System (Domestic and International) Scheduled Enplanements on U.S. Airlines

Passenger numbers in millions (000,000)

Source: Bureau of Transportation Statistics, T-100 Market

Note: Percentage changes based on numbers prior to rounding.

Table 3. Top 10 U.S. Airlines, ranked by January-April 2013 Scheduled System (Domestic and International) Enplanements

Passenger numbers in millions (000,000)

Source: Bureau of Transportation Statistics, T-100 Market

* Southwest and AirTran are reporting as separate carriers with the exception of the financials. They have one FAA SOC (single operating certificate), requiring that they utilize the same safety/operating procedures, but they have separate DOT 401 economic certificates, meaning they are operating as separate economic entities.

Note: Percentage changes based on numbers prior to rounding.

Note: For previous rankings see BTS Air Traffic Press Releases

Table 4. Top 10 U.S. Airlines, ranked by April 2013 Scheduled System (Domestic and International) Enplanements

Passenger numbers in millions (000,000)

Source: Bureau of Transportation Statistics, T-100 Market

* Southwest and AirTran are reporting as separate carriers with the exception of the financials. They have one FAA SOC (single operating certificate), requiring that they utilize the same safety/operating procedures, but they have separate DOT 401 economic certificates, meaning they are operating as separate economic entities.

Note: Percentage changes based on numbers prior to rounding.

Note: For previous rankings see BTS Air Traffic Press Releases

Table 5. Top 10 U.S. Airports, ranked by January-April 2013 Scheduled System (Domestic and International) Enplanements on U.S. Airlines*

Passenger numbers in millions (000,000)

Source: Bureau of Transportation Statistics, T-100 Market

* Numbers do not include international enplanements on foreign carriers

Note: Percentage changes based on numbers prior to rounding.

Table 6. Top 10 U.S. Airports, ranked by April 2013 Scheduled System (Domestic and International) Enplanements on U.S. Airlines*

Passenger numbers in millions (000,000)

Source: Bureau of Transportation Statistics, T-100 Market

* Numbers do not include international enplanements on foreign carriers

Note: Percentage changes based on numbers prior to rounding.

Table 7. Domestic Scheduled Airline Travel on U.S. Airlines

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

* Change in load factor points

** The average non-stop distance flown per departure in miles

*** The average distance flown per passenger in miles

Note: Percentage changes based on numbers prior to rounding.

Table 8. Domestic Scheduled Enplanements on U.S. Airlines

Passenger numbers in millions (000,000)

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

Note: Percentage changes based on numbers prior to rounding.

Table 9. Top 10 U.S. Airlines, ranked by January-April 2013 Domestic Scheduled Enplanements

Passenger numbers in millions (000,000)

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

* Southwest and AirTran are reporting as separate carriers with the exception of the financials. They have one FAA SOC (single operating certificate), requiring that they utilize the same safety/operating procedures, but they have separate DOT 401 economic certificates, meaning they are operating as separate economic entities.

Note: Percentage changes based on numbers prior to rounding.

Note: For previous rankings see BTS Air Traffic Press Releases

Table 10. Top 10 U.S. Airlines, ranked by April 2013 Domestic Scheduled Enplanements

Passenger numbers in millions (000,000)

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

* Southwest and AirTran are reporting as separate carriers with the exception of the financials. They have one FAA SOC (single operating certificate), requiring that they utilize the same safety/operating procedures, but they have separate DOT 401 economic certificates, meaning they are operating as separate economic entities.

Note: Percentage changes based on numbers prior to rounding.

Note: For previous rankings see BTS Air Traffic Press Releases

Table 11. Top 10 U.S. Airports, ranked by January-April 2013 Domestic Scheduled Enplanements

Passenger numbers in millions (000,000)

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

Note: Percentage changes based on numbers prior to rounding.

Table 12. Top 10 U.S. Airports, ranked by April 2013 Domestic Scheduled Enplanements

Passenger numbers in millions (000,000)

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

Note: Percentage changes based on numbers prior to rounding.

Table 13. International Scheduled Airline Travel on U.S. Airlines

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

* Change in load factor points

** The average non-stop distance flown per departure in miles

*** The average distance flown per passenger in miles

Note: Percentage changes based on numbers prior to rounding.

Table 14. International Scheduled Enplanements on U.S. Airlines

Passenger numbers in millions (000,000)

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

Note: Percentage changes based on numbers prior to rounding.

Table 15. Top 10 U.S. Airlines, ranked by January-April 2013 International Scheduled Enplanements

Passenger numbers in thousands (000)

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

* Southwest and AirTran are reporting as separate carriers with the exception of the financials. They have one FAA SOC (single operating certificate), requiring that they utilize the same safety/operating procedures, but they have separate DOT 401 economic certificates, meaning they are operating as separate economic entities.

Note: Percentage changes based on numbers prior to rounding.

Note: For previous rankings see BTS Air Traffic Press Releases

Table 16. Top 10 U.S. Airlines, ranked by April 2013 International Scheduled Enplanements

Passenger numbers in thousands (000)

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

* Southwest and AirTran are reporting as separate carriers with the exception of the financials. They have one FAA SOC (single operating certificate), requiring that they utilize the same safety/operating procedures, but they have separate DOT 401 economic certificates, meaning they are operating as separate economic entities.

Note: Percentage changes based on numbers prior to rounding.

Note: For previous rankings see BTS Air Traffic Press Releases

Table 17. Top 10 U.S. Airports, ranked by January-April 2012 International Scheduled Enplanements on U.S. Airlines*

Passenger numbers in thousands (000)

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

* Numbers do not include international enplanements on foreign carriers

Note: Percentage changes based on numbers prior to rounding.

Table 18. Top 10 U.S. Airports, ranked by April 2013 International Scheduled Enplanements on U.S. Airlines*

Passenger numbers in thousands (000)

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

* Numbers do not include international enplanements on foreign carriers

Note: Percentage changes based on numbers prior to rounding.