Popular airlines from Swindon to Seattle, WA (SEA-Seattle - Tacoma Intl.)
Alaska AirlinesAlaska Airlines
DeltaDelta
American AirlinesAmerican Airlines
UnitedUnited
Southwest AirlinesSouthwest Airlines
Frontier AirlinesFrontier Airlines
JetBlue AirwaysJetBlue Airways
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Today's featured flight deals from Swindon to Seattle, WA (SEA-Seattle - Tacoma Intl.)
- Ontario (ONT) to Seattle (SEA).Frontier Airlines, nonstop.Departing on Sun, Sep 7 at 8:13am from Ontario, arriving at 11:11am in Seattle.Returning on Sun, Sep 14 at 5:35am from Seattle, arriving at 10:25am in Ontario.Select Frontier Airlines flight departing on Sun, Sep 7 at 8:13am from Ontario, returning on Sun, Sep 14 at 5:35am from Seattle priced at $14570% less than typical$145
- Ontario (ONT) to Seattle (SEA).Frontier Airlines, nonstop.Departing on Sat, Aug 30 at 4:56pm from Ontario, arriving at 7:42pm in Seattle.Returning on Sun, Sep 7 at 5:35am from Seattle, arriving at 10:25am in Ontario.Select Frontier Airlines flight departing on Sat, Aug 30 at 4:56pm from Ontario, returning on Sun, Sep 7 at 5:35am from Seattle priced at $19765% less than typical$197
- Ontario (ONT) to Seattle (SEA).Frontier Airlines, nonstop.Departing on Sun, Sep 7 at 8:13am from Ontario, arriving at 11:11am in Seattle.Returning on Sun, Sep 14 at 8:20am from Seattle, arriving at 12:50pm in Ontario.Select Frontier Airlines flight departing on Sun, Sep 7 at 8:13am from Ontario, returning on Sun, Sep 14 at 8:20am from Seattle priced at $19865% less than typical$198
- Ontario (ONT) to Seattle (SEA).Frontier Airlines, nonstop.Departing on Sat, Aug 30 at 4:56pm from Ontario, arriving at 7:42pm in Seattle.Returning on Sun, Sep 7 at 5:35am from Seattle, arriving at 10:25am in Ontario.Select Frontier Airlines flight departing on Sat, Aug 30 at 4:56pm from Ontario, returning on Sun, Sep 7 at 5:35am from Seattle priced at $22960% less than typical$229
- Ontario (ONT) to Seattle (SEA).Frontier Airlines, nonstop.Departing on Sun, Sep 21 at 8:13am from Ontario, arriving at 11:11am in Seattle.Returning on Sun, Sep 28 at 5:35am from Seattle, arriving at 10:25am in Ontario.Select Frontier Airlines flight departing on Sun, Sep 21 at 8:13am from Ontario, returning on Sun, Sep 28 at 5:35am from Seattle priced at $14570% less than typical$145
- New York (JFK) to Seattle (SEA).JetBlue Airways, nonstop.Departing on Sun, Aug 31 at 4:55pm from New York, arriving at 8:25pm in Seattle.Returning on Fri, Sep 5 at 3:23pm from Seattle, arriving on Sat, Sep 6 at 6:32am in New York.Select JetBlue Airways flight departing on Sun, Aug 31 at 4:55pm from New York, returning on Fri, Sep 5 at 3:23pm from Seattle priced at $22260% less than typical$222
- Ontario (ONT) to Seattle (SEA).Frontier Airlines, nonstop.Departing on Sat, Aug 30 at 4:56pm from Ontario, arriving at 7:42pm in Seattle.Returning on Wed, Sep 3 at 6:15am from Seattle, arriving at 10:15am in Ontario.Select Frontier Airlines flight departing on Sat, Aug 30 at 4:56pm from Ontario, returning on Wed, Sep 3 at 6:15am from Seattle priced at $21760% less than typical$217
- Ontario (ONT) to Seattle (SEA).Frontier Airlines, nonstop.Departing on Mon, Sep 1 at 9:40am from Ontario, arriving at 12:25pm in Seattle.Returning on Mon, Sep 8 at 6:30am from Seattle, arriving at 2:10pm in Ontario.Select Frontier Airlines flight departing on Mon, Sep 1 at 9:40am from Ontario, returning on Mon, Sep 8 at 6:30am from Seattle priced at $22355% less than typical$223
- Boston (BOS) to Seattle (SEA).JetBlue Airways, nonstop.Departing on Fri, Aug 22 at 7:00am from Boston, arriving at 10:20am in Seattle.Returning on Mon, Aug 25 at 9:10pm from Seattle, arriving on Tue, Aug 26 at 10:30am in Boston.Select JetBlue Airways flight departing on Fri, Aug 22 at 7:00am from Boston, returning on Mon, Aug 25 at 9:10pm from Seattle priced at $43740% less than typical$437
Origin airport | SWI-All Airports |
Destination airport | Seattle - Tacoma Intl. |
Distance | 4744 mi |
Swindon to Seattle Flights
The cheapest times to fly from Swindon to Seattle
On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Swindon to Seattle are during the month of . You can find some of the cheapest flights from Swindon to Seattle with Expedia's search tool and vast selection of airlines.
The best time to book a flight from Swindon to Seattle
Sunday is one of the best days to book for cheap flights from Swindon to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.
How to find cheap round-trip tickets from Swindon to Seattle
Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Swindon to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.
Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Swindon to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.
You could also save big by booking one of Expedia's vacation packages. Bundling together your Swindon to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.
*Terms apply.
Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.