Ontario (ONT) to San Jose (SJC) flights
Southwest Airlines flies nonstop from Ontario International Airport to Mineta San Jose International Airport, with about 27 flights a week in July 2026. The 333-mile flight takes about 1h 6m gate to gate.
- Distance
- 333 mi · 536 km
- Flight time
- 1h 6m
- Airlines
- 1
- Seats filled
- 60%
Airlines flying ONT to SJC
| 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 | 120,844 | 1h 6m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
ONT to SJC flight schedule
12 flight numbers flew this route in August 2026. The first usually leaves at 6:00am and the last at 6:45pm. 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 3272Southwest Airlines | 6:00am | 7:15am | 12 | 100% |
| WN 1645Southwest Airlines | 6:10am | 7:25am | 4 | n/a |
| WN 3092Southwest Airlines | 8:35am | 9:50am | 4 | n/a |
| WN 2468Southwest Airlines | 9:05am | 10:15am | 12 | 83% |
| WN 2956Southwest Airlines | 10:55am | 12:05pm | 16 | 88% |
| WN 4941Southwest Airlines | 12:25pm | 1:35pm | 4 | n/a |
| WN 955Southwest Airlines | 1:15pm | 2:30pm | 8 | n/a |
| WN 982Southwest Airlines | 3:40pm | 4:55pm | 12 | 100% |
| WN 3093Southwest Airlines | 4:40pm | 5:55pm | 4 | n/a |
| WN 3725Southwest Airlines | 5:35pm | 6:45pm | 4 | n/a |
| WN 3094Southwest Airlines | 6:25pm | 7:35pm | 8 | n/a |
| WN 3455Southwest Airlines | 6:45pm | 7:55pm | 12 | 92% |
Is ONT to SJC on time?
From September 2025 to August 2026, 86% of 1,320 flights arrived within 15 minutes of schedule and 0.1% were cancelled. Flights leaving around 6am were the most punctual (98%), those around 7pm the least (65%). Most delay time was caused by late-arriving aircraft (80%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 1,320 | 86% | 9 min | 0.1% |
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 | 218 | 98% | |
| 7am to 8am | 31 | 97% | |
| 8am to 9am | 51 | 100% | |
| 9am to 10am | 51 | 92% | |
| 10am to 11am | 128 | 94% | |
| 11am to 12pm | 60 | 95% | |
| 12pm to 1pm | 101 | 91% | |
| 2pm to 3pm | 28 | 82% | |
| 3pm to 4pm | 90 | 86% | |
| 4pm to 5pm | 126 | 75% | |
| 5pm to 6pm | 84 | 75% | |
| 6pm to 7pm | 124 | 83% | |
| 7pm to 8pm | 103 | 65% | |
| 8pm to 9pm | 59 | 75% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 110 | 10,702 | |
| September 2025 | 107 | 11,092 | |
| October 2025 | 110 | 11,564 | |
| November 2025 | 119 | 11,653 | |
| December 2025 | 118 | 10,282 | |
| January 2026 | 101 | 7,895 | |
| February 2026 | 99 | 8,409 | |
| March 2026 | 108 | 9,899 | |
| April 2026 | 106 | 9,454 | |
| May 2026 | 110 | 10,013 | |
| June 2026 | 114 | 10,371 | |
| July 2026 | 119 | 9,510 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.