$84 Cheap Flights from Ontario to Seattle

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Find The Best Dates To Fly from Los Angeles - Ontario Intl. to Seattle - Tacoma Intl.

Amazing ONT to SEA Flight Deals

The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were $160 round trip and $84 one way. Prices and availability subject to change. Additional terms may apply.

Flight Schedule for ONT to SEA

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AS61510:00 am00:35 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
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DL365900:06 pm02:45 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
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DL368005:38 pm08:20 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
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AS42305:54 pm08:32 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
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Best Seattle - Tacoma Intl. Flight and Hotel Packages

Seattle - Tacoma Intl. flight + hotel packages - economy flights

Stunning House with Views of Puget Sound Ideal for Family Reunions
Bellevue Club Hotel
Sonesta Select Seattle Bellevue Redmond
Grand Hyatt Seattle
Hyatt Regency Seattle
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Frequently asked questions

 

Traveling From Los Angeles - Ontario Intl.
Traveling To Seattle - Tacoma Intl.
Shortest Flight Time 2 hours 35 mins
Earliest Departure Time 6:00AM PDT
Latest Departure Time 7:55PM PDT
Lowest Flight Price $160

Route Info

Flight path for flights from LA/Ontario International Airport to Seattle-Tacoma International Airport.

Distance:
1,047.00 miles

Discover our best flights from Ontario ONT to Seattle SEA. 

With 19 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 

 

Find our best return flights from Ontario ONT to Seattle SEA at the right price  

Airfares to Seattle SEA from Ontario ONT currently cost between $160 and $193. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way flights from Ontario ONT to Seattle SEA 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Ontario ONT to Seattle SEA on Travelocity starting at $84. Prices and availability subject to change. Additional terms may apply. 

 

Get to Seattle SEA from Ontario ONT quicker with direct flights. 

Get to Seattle faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to SEA from ONT to take around 2 hour(s) 35 min(s).  

 

Find our cheapest airfares for flights from Ontario ONT to Seattle SEA

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to SEA from ONT. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  

 

Get our best airfare deals for your flight from Ontario ONT to Seattle SEA today 

If you’re flexible about when you travel, September is usually the cheapest month to fly from Ontario ONT to Seattle SEA. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 

 

Book flexible airline tickets for flights to Seattle SEA from Ontario ONT 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to SEA from ONT have this option.  

 

Travel with confidence when you book flights to Seattle SEA from Ontario ONT with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.