Austin (AUS) to Ontario (ONT) flights
Southwest Airlines flies nonstop from Austin Bergstrom International Airport to Ontario International Airport, with about 7 flights a week in July 2026. The 1,196-mile flight takes about 2h 59m gate to gate.
- Distance
- 1,196 mi · 1,925 km
- Flight time
- 2h 59m
- Airlines
- 1
- Seats filled
- 79%
Airlines flying AUS to ONT
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 7 | Boeing 737-700 / MAX 7, Boeing 737-800, Boeing 737 MAX 8 | 41,450 | 2h 59m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
AUS to ONT flight schedule
3 flight numbers flew this route in August 2026. The first usually leaves at 10:50am and the last at 7:45pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| WN 2421Southwest Airlines | 10:50am | 11:50am | 8 | n/a |
| WN 2158Southwest Airlines | 11:00am | 12:00pm | 12 | 83% |
| WN 1931Southwest Airlines | 7:45pm | 8:45pm | 4 | n/a |
Is AUS to ONT on time?
From September 2025 to August 2026, 75% of 336 flights arrived within 15 minutes of schedule and 0.6% were cancelled. Flights leaving around 11am were the most punctual (90%), those around 8pm the least (63%). Most delay time was caused by late-arriving aircraft (56%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 336 | 75% | 13 min | 0.6% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 11am to 12pm | 30 | 90% | |
| 1pm to 2pm | 82 | 88% | |
| 2pm to 3pm | 63 | 70% | |
| 3pm to 4pm | 13 | 85% | |
| 4pm to 5pm | 67 | 69% | |
| 7pm to 8pm | 34 | 65% | |
| 8pm to 9pm | 31 | 63% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 26 | 3,045 | |
| September 2025 | 28 | 3,379 | |
| October 2025 | 27 | 3,263 | |
| November 2025 | 29 | 3,676 | |
| December 2025 | 31 | 4,231 | |
| January 2026 | 27 | 3,027 | |
| February 2026 | 25 | 2,901 | |
| March 2026 | 31 | 3,984 | |
| April 2026 | 27 | 3,288 | |
| May 2026 | 26 | 3,437 | |
| June 2026 | 30 | 3,804 | |
| July 2026 | 30 | 3,727 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.