The U.S. aircraft register, updated daily
Routes and flights · the DOT's airline reports, August 2025 to July 2026

Austin-Bergstrom International ⇄ Washington Dulles International AUS–IAD

Airlines flew 2,247 flights between Austin-Bergstrom International AUS in Austin, TX and Washington Dulles International IAD in Washington, DC in the twelve months to July 2026, both directions together: 280,908 passengers in 339,593 seats, 83% of them filled, and 23,102 pounds of freight. 1,297 miles, about 164 minutes in the air, on 11 airlines: United Air Lines Inc. (1,996), Mesa Airlines Inc. (166), Allegiant Air (48), Republic Airline (27) and 7 more. Planning to fly it yourself? The weather and winds along this route right now.

2,247
flights, twelve months
AUS-IAD: 1,126 · IAD-AUS: 1,121
280,908
passengers
83% of seats filled
1,297
miles
about 164 minutes airborne
11
airlines
11 aircraft types

Flights by month both directions

0621241872491/254/257/2510/251/264/261997/26
By month, as a table
flights
1/25163
2/25160
3/25190
4/25241
5/25249
6/25234
7/25202
8/25211
9/25223
10/25186
11/25179
12/25186
1/26151
2/26154
3/26187
4/26181
5/26188
6/26202
7/26199

Passengers by month

07,68515,37023,05530,7401/254/257/2510/251/264/2625,2567/26
By month, as a table
passengers
1/2515,980
2/2517,484
3/2524,895
4/2527,328
5/2530,740
6/2530,134
7/2524,189
8/2523,616
9/2525,875
10/2526,239
11/2522,375
12/2521,555
1/2616,354
2/2618,216
3/2623,824
4/2624,817
5/2626,207
6/2626,574
7/2625,256

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
United Air Lines Inc. UA1,996259,89782%scheduled passenger service
Mesa Airlines Inc. YV16610,57687%scheduled passenger service
Allegiant Air G4488,18695%scheduled passenger service
Republic Airline YX271,65982%scheduled passenger service
Jet Aviation Flight Services, Inc. 27Q2212%charter passenger service
Sun Country Airlines d/b/a MN Airlines SY28824%charter passenger service
Southwest Airlines Co. WN233094%charter passenger service
ADVANCED AIR, LLC AN1111%charter passenger service
Global Crossing Airlines, Inc. GCA100%charter passenger service
SkyWest Airlines Inc. OO100%scheduled passenger service
American Airlines Inc. AA116998%scheduled passenger service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Boeing 737-700/700LR/Max 747212653,070
Boeing 737-900ER40817959,987
Boeing B737 Max 80032716640,600
Boeing 737-80032016643,899
Boeing B737 Max 90027517939,861
Embraer ERJ-1751887311,875
Airbus Industrie A320-100/20013816119,646
Airbus Industrie A31910812611,439
Embraer-Emb-170670360
Bombardier BD-100-1A10 Challenger 300383
Airbus Industrie A321-200n2200168

AUS → IAD this direction alone · flown January 2025 to July 2026

1,126 flights of 1,126 scheduled, 141,701 passengers in 170,161 seats, 9,011 pounds of freight. United Air Lines Inc. 999; Mesa Airlines Inc. 83; Allegiant Air 24; Republic Airline 14; Jet Aviation Flight Services, Inc. 1; ADVANCED AIR, LLC 1; Global Crossing Airlines, Inc. 1; SkyWest Airlines Inc. 1; Sun Country Airlines d/b/a MN Airlines 1; Southwest Airlines Co. 1.

IAD → AUS this direction alone · flown January 2025 to July 2026

1,121 flights of 1,124 scheduled, 139,207 passengers in 169,432 seats, 14,091 pounds of freight. United Air Lines Inc. 997; Mesa Airlines Inc. 83; Allegiant Air 24; Republic Airline 13; Jet Aviation Flight Services, Inc. 1; American Airlines Inc. 1; Sun Country Airlines d/b/a MN Airlines 1; Southwest Airlines Co. 1.

Source: the Bureau of Transportation Statistics' T-100 Segment table (all carriers). A flight is one departure performed on this segment; seats and passengers are the airlines' own monthly reports; "seats filled" is passengers divided by seats. The miles are the DOT's great-circle distance. Both ends: Austin-Bergstrom International AUS and Washington Dulles International IAD; all routes.