Flights Ontario → Seattle
ONT → SEA
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) → Seattle (SEA) route is operated by American Airlines, Alaska Airlines. Across 512 flights monitored in recent months, 91% arrived on time (within 15 min of schedule), with an average delay of 2 minutes. The cancellation rate is 0.78%. FlightGuard's average computed risk is 8.3/100 (low), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Seattle 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 |
|---|---|---|---|
| Alaska Airlines (AS) | 83% | 1 min | 1.1% |
| American Airlines (AA) | 76% | 9 min | 2.4% |
Airlines operating ONT-SEA
Airports
Frequently asked questions about ONT-SEA
On the Ontario (ONT) -> Seattle (SEA) route, on-time performance is 91% with an average delay of 2 minutes, based on 512 tracked flights.
The cancellation rate on Ontario-Seattle is 0.78% across 512 monitored flights.
The route is operated by 2 airlines: American Airlines, Alaska Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at Seattle, 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.
