Flights Ontario → Las Vegas
ONT → LAS
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 Ontario (ONT) → Las Vegas (LAS) route is operated by Southwest Airlines. Across 591 flights monitored in recent months, 78% arrived on time (within 15 min of schedule), with an average delay of 10 minutes. The cancellation rate is 0.17%. FlightGuard's average computed risk is 8/100 (low), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Las Vegas the average ATFM delay is 2.0 minutes (main cause: atfm). Departing from Ontario the average ATFM delay is 2.0 minutes.
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| Southwest Airlines (WN) | 73% | 5 min | 0.9% |
Airlines operating ONT-LAS
Airports
Frequently asked questions about ONT-LAS
On the Ontario (ONT) -> Las Vegas (LAS) route, on-time performance is 78% with an average delay of 10 minutes, based on 591 tracked flights.
The cancellation rate on Ontario-Las Vegas is 0.17% across 591 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 Las Vegas, 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.
