San Jose (SJC) to Ontario (ONT) flights
Southwest Airlines flies nonstop from Mineta San Jose International Airport to Ontario International Airport, with about 27 flights a week in July 2026. The 333-mile flight takes about 1h 10m gate to gate.
- Distance
- 333 mi · 536 km
- Flight time
- 1h 10m
- Airlines
- 1
- Seats filled
- 57%
Airlines flying SJC to ONT
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 27 | Boeing 737-700 / MAX 7, Boeing 737 MAX 8, Boeing 737-800 | 117,532 | 1h 10m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SJC to ONT flight schedule
9 flight numbers flew this route in August 2026. The first usually leaves at 6:30am and the last at 9:00pm. 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 2698Southwest Airlines | 6:30am | 7:50am | 16 | 100% |
| WN 3608Southwest Airlines | 7:15am | 8:30am | 12 | 92% |
| WN 3500Southwest Airlines | 10:55am | 12:10pm | 12 | 92% |
| WN 2882Southwest Airlines | 12:20pm | 1:35pm | 16 | 94% |
| WN 3719Southwest Airlines | 4:45pm | 6:00pm | 12 | 83% |
| WN 189Southwest Airlines | 5:00pm | 6:20pm | 4 | n/a |
| WN 3610Southwest Airlines | 5:05pm | 6:25pm | 12 | 75% |
| WN 2377Southwest Airlines | 8:10pm | 9:25pm | 12 | 50% |
| WN 2165Southwest Airlines | 9:00pm | 10:15pm | 4 | n/a |
Is SJC to ONT on time?
From September 2025 to August 2026, 82% of 1,318 flights arrived within 15 minutes of schedule and 0.2% were cancelled. Flights leaving around 8am were the most punctual (99%), those around 8pm the least (62%). Most delay time was caused by late-arriving aircraft (75%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 1,318 | 82% | 9 min | 0.2% |
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 |
|---|---|---|---|
| 6am to 7am | 151 | 98% | |
| 7am to 8am | 138 | 98% | |
| 8am to 9am | 70 | 99% | |
| 9am to 10am | 29 | 93% | |
| 10am to 11am | 130 | 88% | |
| 11am to 12pm | 123 | 85% | |
| 12pm to 1pm | 44 | 96% | |
| 1pm to 2pm | 39 | 85% | |
| 3pm to 4pm | 51 | 78% | |
| 4pm to 5pm | 105 | 73% | |
| 5pm to 6pm | 79 | 70% | |
| 6pm to 7pm | 78 | 71% | |
| 7pm to 8pm | 71 | 86% | |
| 8pm to 9pm | 130 | 62% | |
| 9pm to 10pm | 58 | 42% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 111 | 10,792 | |
| September 2025 | 107 | 10,572 | |
| October 2025 | 114 | 11,744 | |
| November 2025 | 116 | 10,888 | |
| December 2025 | 121 | 10,681 | |
| January 2026 | 102 | 7,308 | |
| February 2026 | 100 | 8,034 | |
| March 2026 | 108 | 9,307 | |
| April 2026 | 106 | 9,336 | |
| May 2026 | 111 | 9,755 | |
| June 2026 | 113 | 9,876 | |
| July 2026 | 120 | 9,482 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.