Flights San Jose → Ontario
SJC → ONT
Route overview
The flight route from San Jose to Ontario is served by a Boeing 737-300 and operates with an on-time performance rate of 82%, with flights typically experiencing a mean delay of 4.8 minutes. The destination airport sees over five million passengers annually, indicating it is a busy travel hub.
Your rights on this US flight (DOT)
US flights have no statutory cash compensation for delays. Under the US DOT rules, if your flight is cancelled or significantly changed and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Amenities for controllable delays depend on each airline's contract of carriage.
US flight refund rules & checker →General information, not legal advice.
The San Jose (SJC) → Ontario (ONT) route is operated by Southwest Airlines. Across 422 flights monitored in recent months, 82% arrived on time (within 15 min of schedule), with an average delay of 6 minutes. The cancellation rate is 0.24%. FlightGuard's average computed risk is 19.8/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Ontario the average ATFM delay is 2.0 minutes (main cause: airspace/NAS (BTS)). Departing from San Jose the average ATFM delay is 2.0 minutes.
Heading to Ontario: what to expect in this direction
Flying from San Jose (SJC) to Ontario (ONT) heads south-east for about 536 km, a flight time of roughly 1h 5m.
Departures from San Jose on this leg cluster in the overnight window: about 50% of SJC-ONT flights take off then.
Air-traffic congestion: departing San Jose the average ATFM delay is 2.0 min (atfm); arriving into Ontario it is 2.0 min (airspace/NAS (BTS)).
Across 422 tracked SJC-ONT flights, 82% left on time with an average delay of 6 min and a 0.2% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| Southwest Airlines (WN) | 73% | 6 min | 3.1% |
Airlines operating SJC-ONT
Airports
Frequently asked questions about SJC-ONT
On the San Jose (SJC) -> Ontario (ONT) route, on-time performance is 82% with an average delay of 6 minutes, based on 422 tracked flights.
The cancellation rate on San Jose-Ontario is 0.24% across 422 monitored flights.
The route is operated by 1 airline: Southwest Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at Ontario, ATC delays, strikes, NOTAMs, fuel, airline punctuality and recent trends.
US flights have no statutory cash compensation for delays. Under US DOT rules, if the airline cancels or significantly changes your flight and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Meals or hotels for controllable delays depend on each airline's contract of carriage.
