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Ontario International Airport to Seattle Tacoma Intl. Airport flight

Cheap Flights from Ontario International Airport to Seattle Tacoma Intl. Airport

Search for flights from Los Angeles to Seattle and check out affordable one-way and round-trip options.

  • Round-trip
  • One way

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Selected Airlines from Ontario International Airport to Seattle Tacoma Intl. Airport

See which airlines fly from Los Angeles to Seattle. Find the airline that best meets your travel needs by comparing prices and treat yourself to an enjoyable journey.

Frontier Airlines
From $47
Hawaiian Airlines
From $75
Alaska Airlines
From $77
Delta Air Lines
From $78
Southwest Airlines
From $92
United Airlines
From $105
American Airlines
From $127

Find more flights and airlines

Ontario International Airport to Seattle Tacoma Intl. Airport Flights Info

Flight distance 1,540.96 km
Cheapest one-way ticket price $46
Cheapest return ticket price $111

FAQs for Ontario International Airport to Seattle Tacoma Intl. Airport Flights

  • How long is a flight from Ontario International Airport to Seattle Tacoma Intl. Airport?

    It takes around 2 hours 53 minutes to fly from Ontario International Airport (ONT) to Seattle Tacoma Intl. Airport (SEA).

  • How many daily flights are there from Ontario International Airport (ONT) to Seattle Tacoma Intl. Airport (SEA)?

    There are around 11 daily flights from Ontario International Airport (ONT) to Seattle Tacoma Intl. Airport (SEA).

  • When are flight tickets from Ontario International Airport (ONT) to Seattle Tacoma Intl. Airport (SEA) the cheapest?

    Tickets cost around $111 in September, making it the cheapest month to book. Ontario International Airport (ONT) to Seattle Tacoma Intl. Airport (SEA) is a popular route, so don't forget to book your tickets in advance.

  • When are flight tickets from Ontario International Airport (ONT) to Seattle Tacoma Intl. Airport (SEA) most expensive?

    The route from Ontario International Airport (ONT) to Seattle Tacoma Intl. Airport (SEA) is quite popular. Without considering departure times or holidays, tickets cost around $242 in July, the most expensive month to book this route.

  • What time does the earliest flight from Ontario International Airport to Seattle Tacoma Intl. Airport depart?

    The earliest flight departs from Ontario International Airport (ONT) at 06:00 and arrives in Seattle Tacoma Intl. Airport (SEA) at 08:42.

  • What time does the latest flight from Ontario International Airport to Seattle Tacoma Intl. Airport depart?

    The latest flight departs from Ontario International Airport (ONT) at 19:22 and arrives in Seattle Tacoma Intl. Airport (SEA) at 22:05.

  • What is the transportation method from the main airport to downtown in Seattle?

    • The distance from Seattle–Tacoma International Airport to downtown is about 17 km. It takes about 30 minutes by taxi.

  • Which airline operates the most direct flights from Ontario International Airport (ONT) to Seattle Tacoma Intl. Airport (SEA)?

    Alaska Airlines is a very popular airline operating an average of 5754 flights per month.

Popular Destinations

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