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All scheduled flights from Ontario to Seattle (ONT-SEA)

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All scheduled flights from ONT to SEA. You can fly from Ontario to Seattle non-stop on every weekday and the flight takes about 3 hours. Flights with stops take between 4 to 7 hours depending on your flight and connection airport.
ONT-SEA
- Flight has a long layover time at the stop-airport and will affect your flight time.
- Change of terminals at the layover airport. This can go quickly or take time depending on the airport.
- Flight is partially or completely overnight (Red-eye flight).
- Airline or one of the airlines in the flight path is a low-cost carrier. Some travelers wants to avoid low-cost airlines.
- This is codeshare flight. A codeshare flight is an agreement between airlines to sell seats on each others flights. Click on the flight to see the actual flight operator.

Flying non-stop between ONT and SEA with Alaska Airlines or Delta Air Lines is the fastest flight option. The flight takes about 2 hours and 50 minutes.

SEA is the IATA airport code for Seattle Tacoma International Airport, Seattle Airport, Washington.

The transfer from SEA is 17 minutes by car to Downtown Seattle.

Airlines that offer direct flights from Ontario (ONT) to Seattle (SEA) is Alaska Airlines and Delta Air Lines.

The Boeing 737-900 (winglets) Passenger/BBJ3 with Alaska Airlines has 178 seats and the Boeing 737MAX 9 Passenger with Alaska Airlines has 176 seats.

It all depends on what dates you plan on flying. But the approximate round-trip price for one passenger with Delta is $218 and with Alaska Airlines $258.