Chicago (MDW) to Ontario (ONT) flights
Southwest Airlines flies nonstop from Chicago Midway International Airport to Ontario International Airport, with about 7 flights a week in July 2026. The 1,706-mile flight takes about 4h 12m gate to gate.
- Distance
- 1,706 mi · 2,746 km
- Flight time
- 4h 12m
- Airlines
- 1
- Seats filled
- 76%
Airlines flying MDW 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 | 45,383 | 4h 12m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
MDW to ONT flight schedule
2 flight numbers flew this route in August 2026, 1 of them almost daily. The first usually leaves at 2:00pm and the last at 9:25pm. 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 2784Southwest Airlines | 2:00pm | 4:10pm | 24 | 63% |
| WN 1347Southwest Airlines | 9:25pm | 11:35pm | 4 | n/a |
Is MDW to ONT on time?
From September 2025 to August 2026, 69% of 360 flights arrived within 15 minutes of schedule and 0.8% were cancelled. Flights leaving around 8am were the most punctual (85%), those around 9pm the least (35%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (47%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 360 | 69% | 17 min | 0.8% |
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 |
|---|---|---|---|
| 7am to 8am | 17 | 88% | |
| 8am to 9am | 92 | 85% | |
| 10am to 11am | 22 | 73% | |
| 11am to 12pm | 97 | 68% | |
| 12pm to 1pm | 12 | 75% | |
| 1pm to 2pm | 13 | 69% | |
| 2pm to 3pm | 12 | 67% | |
| 3pm to 4pm | 24 | 46% | |
| 5pm to 6pm | 18 | 67% | |
| 8pm to 9pm | 14 | 71% | |
| 9pm to 10pm | 21 | 35% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 30 | 3,540 | |
| September 2025 | 31 | 3,634 | |
| October 2025 | 31 | 4,146 | |
| November 2025 | 28 | 3,069 | |
| December 2025 | 31 | 3,874 | |
| January 2026 | 28 | 2,556 | |
| February 2026 | 27 | 2,623 | |
| March 2026 | 30 | 3,774 | |
| April 2026 | 30 | 3,927 | |
| May 2026 | 32 | 4,450 | |
| June 2026 | 30 | 4,834 | |
| July 2026 | 32 | 4,956 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.