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

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All scheduled flights from SEA to ONT. You can fly from Seattle to Ontario non-stop on every weekday and the flight takes about 2 and a half hours. Flights with stops take between 4 to 7 hours depending on your flight and connection airport.
SEA-ONT
- 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 SEA and ONT with Alaska Airlines or Delta Air Lines is the fastest flight option. The flight takes about 2 hours and 30 minutes.

ONT is the IATA airport code for Ontario International Airport, Ontario, California.

ONT has 24 flight routes and 139 arriving and departing passenger flights every day.

The transfer from ONT is 8 minutes by car to Downtown Ontario.

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

The Boeing 737MAX 9 Passenger with Alaska Airlines has 176 seats and the Embraer 175 (Enhanced Winglets) with Delta Air Lines has 73 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.