Help
Trip.com
>
Cheap Flights
>
Seattle
>
Los Angeles to Seattle flight
>
Ontario International Airport to Seattle-Tacoma International Airport flight
Worldwide Coverage
Worldwide Coverage
Flights to over 5,000 cities
One-stop Service Guarantee
One-stop Service Guarantee
Price guaranteed upon confirmed payment, booking guaranteed once tickets issued
Secure Payment
Secure Payment
Convenient & reliable booking and payment system

Cheap Flight Deals from Ontario International Airport to Seattle-Tacoma International Airport

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

  • One way
  • Round-trip
sortSort: Price (Lowest)
  • Sort: Price (Lowest)
  • Sort: Departure (Earliest)
      • ONT10:04
        2h 53m
        Direct
        SEA12:57
        Ontario - Seattle|Sat, May 18|Frontier Airlines
        £21£50
        57% OFF
        57% OFF
        £50£21
      • ONT09:35
        2h 47m
        Direct
        SEA12:22
        Ontario - Seattle|Tue, Jun 4|Frontier Airlines
        £24£50
        51% OFF
        51% OFF
        £50£24
      • ONT10:06
        2h 47m
        Direct
        SEA12:53
        Ontario - Seattle|Sat, Jun 1|Frontier Airlines
        £24£50
        51% OFF
        51% OFF
        £50£24
      • ONT09:50
        2h 47m
        Direct
        SEA12:37
        Ontario - Seattle|Wed, May 29|Frontier Airlines
        £24
        £24
      • ONT10:04
        2h 53m
        Direct
        SEA12:57
        Ontario - Seattle|Tue, May 21|Frontier Airlines
        £24
        £24
      • ONT10:04
        2h 53m
        Direct
        SEA12:57
        Ontario - Seattle|Wed, May 22|Frontier Airlines
        £24
        £24
      • ONT10:39
        2h 53m
        Direct
        SEA13:32
        Ontario - Seattle|Thu, May 16|Frontier Airlines
        £29
        £29
      • ONT09:50
        2h 47m
        Direct
        SEA12:37
        Ontario - Seattle|Wed, Jun 5|Frontier Airlines
        £32
        £32
      • ONT10:24
        2h 53m
        Direct
        SEA13:17
        Ontario - Seattle|Fri, May 17|Frontier Airlines
        £32
        £32
      • ONT09:35
        2h 47m
        Direct
        SEA12:22
        Ontario - Seattle|Tue, Jun 11|Frontier Airlines
        £32
        £32
      • ONT13:00
        3h 5m
        Direct
        SEA14:00
        Los Angeles - Seattle|Wed, Apr 24|Frontier Airlines
        Find More Flights
        Find More Flights

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 International 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 £21
Delta Air Lines
From £45
Alaska Airlines
From £49
Southwest Airlines
From £66
United Airlines
From £72
American Airlines
From £169
Hawaiian Airlines
From £730
ANA airlines
Find more flights and airlines

Find Cheaper Flights from Los Angeles to Seattle

Explore other flights from Los Angeles to Seattle to find the best alternative options.

  • Cheapest
    Spirit Airlines
    LAX
    16:16
    4h 39m
    1 transfer
    SEA
    20:55
    Los Angeles International Airport - Seattle-Tacoma International Airport
    Wed, May 8Spirit Airlines
    £49
  • Spirit Airlines
    LAX
    16:16
    4h 39m
    1 transfer
    SEA
    20:55
    Los Angeles International Airport - Seattle-Tacoma International Airport
    Wed, May 8Spirit Airlines
    £49
    Find More Flights

Ontario International Airport to Seattle-Tacoma International Airport Flights Info

Flight distance1,540.96km
Cheapest one-way ticket price£21
Cheapest return ticket price£48

FAQs for Ontario International Airport to Seattle-Tacoma International Airport Flights

  • How long does it take to fly from Ontario International Airport (ONT) to Seattle-Tacoma International Airport (SEA)?

    It takes around 2 hours 58 minutes to fly from Ontario International Airport (ONT) to Ontario International Airport(SEA).

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

    There are around 9 daily flights from Ontario International Airport (ONT) to Seattle-Tacoma International Airport (SEA).

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

    Tickets cost around £97 in May, making it the cheapest month to book. Ontario International Airport (ONT) to Seattle-Tacoma International 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 International Airport (SEA) most expensive?

    The route from Ontario International Airport (ONT) to Seattle-Tacoma International Airport (SEA) is quite popular. Without considering departure times or holidays, tickets cost around £159 in April, the most expensive month to book this route.

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

    • The distance from Seattle-Tacoma International Airport to downtown is about 17km, by taxi about 30 minutes.

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

    Alaska Airlines is a very popular airline operating an average of 4953 flights per month.

Contact Us

About

Other Services

Payment Methods
Our Partners
Copyright © 2024 Trip.com Travel Singapore Pte. Ltd. All rights reserved
Site Operator: Trip.com Travel Singapore Pte. Ltd.