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

Ontario International ⇄ Austin-Bergstrom International ONT–AUS

Airlines flew 678 flights between Ontario International ONT in Ontario, CA and Austin-Bergstrom International AUS in Austin, TX in the twelve months to July 2026, both directions together: 85,650 passengers in 108,363 seats, 79% of them filled, and 39,101 pounds of freight. 1,196 miles, about 145 minutes in the air, on 5 airlines: Southwest Airlines Co. (668), American Airlines Inc. (3), SkyWest Airlines Inc. (3), Federal Express Corporation (3) and 1 more. Planning to fly it yourself? The weather and winds along this route right now.

678
flights, twelve months
ONT-AUS: 338 · AUS-ONT: 340
85,650
passengers
79% of seats filled
1,196
miles
about 145 minutes airborne
5
airlines
6 aircraft types

Flights by month both directions

0163248641/254/257/2510/251/264/26617/26
By month, as a table
flights
1/2561
2/2556
3/2563
4/2563
5/2563
6/2562
7/2562
8/2552
9/2555
10/2554
11/2558
12/2564
1/2655
2/2649
3/2664
4/2654
5/2652
6/2660
7/2661

Passengers by month

02,2134,4266,6388,8511/254/257/2510/251/264/267,9807/26
By month, as a table
passengers
1/257,057
2/256,372
3/257,815
4/258,451
5/258,757
6/258,766
7/258,851
8/256,219
9/256,972
10/256,737
11/257,428
12/257,931
1/265,487
2/265,805
3/268,718
4/267,078
5/267,053
6/268,242
7/267,980

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
Southwest Airlines Co. WN66884,78279%scheduled passenger service
American Airlines Inc. AA354398%scheduled passenger service
SkyWest Airlines Inc. OO314463%scheduled passenger service
Federal Express Corporation FX30scheduled cargo service
Delta Air Lines Inc. DL118195%scheduled passenger service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Boeing 737-700/700LR/Max 727214030,991
Boeing B737 Max 80020617527,125
Boeing 737-80019117526,834
Airbus Industrie A321Neoxlr3190556
Embraer ERJ-175376144
Boeing 767-300/300ER300

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

338 flights of 339 scheduled, 43,888 passengers in 55,301 seats, 20,378 pounds of freight. Southwest Airlines Co. 334; American Airlines Inc. 2; Delta Air Lines Inc. 1; SkyWest Airlines Inc. 1.

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

340 flights of 341 scheduled, 41,762 passengers in 53,062 seats, 18,723 pounds of freight. Southwest Airlines Co. 334; Federal Express Corporation 3; SkyWest Airlines Inc. 2; American Airlines Inc. 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: Ontario International ONT and Austin-Bergstrom International AUS; all routes.