Baltimore (BWI) to Ontario (ONT) flights
Southwest Airlines flies nonstop from Baltimore/Washington International Thurgood Marshall Airport to Ontario International Airport, with about 7 flights a week in July 2026. The 2,283-mile flight takes about 5h 20m gate to gate.
- Distance
- 2,283 mi · 3,674 km
- Flight time
- 5h 20m
- Airlines
- 1
- Seats filled
- 74%
Airlines flying BWI to ONT
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 7 | Boeing 737 MAX 8, Boeing 737-800, Boeing 737-700 / MAX 7 | 35,306 | 5h 20m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
Is BWI to ONT on time?
From September 2025 to August 2026, 61% of 254 flights arrived within 15 minutes of schedule and 0.4% were cancelled. Flights leaving around 9am were the most punctual (90%), those around 1pm the least (54%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (47%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 254 | 61% | 20 min | 0.4% |
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 |
|---|---|---|---|
| 9am to 10am | 39 | 90% | |
| 11am to 12pm | 15 | 73% | |
| 12pm to 1pm | 32 | 63% | |
| 1pm to 2pm | 37 | 54% | |
| 2pm to 3pm | 17 | 71% | |
| 3pm to 4pm | 34 | 56% | |
| 5pm to 6pm | 12 | 17% | |
| 8pm to 9pm | 45 | 56% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 30 | 3,248 | |
| September 2025 | 30 | 3,127 | |
| October 2025 | 31 | 3,691 | |
| November 2025 | 20 | 2,007 | |
| December 2025 | 17 | 2,308 | |
| January 2026 | 4 | 568 | |
| March 2026 | 27 | 3,301 | |
| April 2026 | 30 | 3,829 | |
| May 2026 | 31 | 4,406 | |
| June 2026 | 30 | 4,440 | |
| July 2026 | 30 | 4,381 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.