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Book cheap flights from Seattle to Ontario, CA from £28

Last minute flights from Seattle to Ontario, CA

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Prices shown below were available within the past 3 days for the period specified and should not be considered the final price offered. Please note that availability and prices are subject to change.

Seattle Ontario, CA

BEST

DEAL

Mon, 13 May SEA - ONT

Thu, 16 May ONT - SEA

£116 £110

Prime price per passenger

Seattle Ontario, CA

BEST

DEAL

Sat, 18 May SEA - ONT

£29 £28

Prime price per passenger

Seattle Ontario, CA

BEST

DEAL

Sat, 18 May SEA - ONT

Wed, 22 May ONT - SEA

£60 £59

Prime price per passenger

Seattle Ontario, CA

BEST

DEAL

Mon, 29 Apr SEA - ONT

Wed, 01 May ONT - SEA

£178 £174

Prime price per passenger

Seattle Ontario, CA

BEST

DEAL

Sat, 04 May SEA - ONT

Sun, 05 May ONT - SEA

£85 £80

Prime price per passenger

Seattle Ontario, CA

BEST

DEAL

Fri, 10 May SEA - ONT

Sun, 12 May ONT - SEA

£91 £86

Prime price per passenger

Route information

Distance: 967 miles

Seattle airports

Seattle All Airports (SEA) How far from city centre: 11 miles

Boeing Field International (BFI) How far from city centre: 5 miles

Lake Union Spb (LKE) How far from city centre: 7 miles

Ontario, CA airports

Ontario International (ONT) How far from city centre: 2 miles

Los Angeles Intl Airport (LAX) How far from city centre: 44 miles

Searching for Seattle to Ontario, CA flights?

Enjoy the best flight deals whether you are looking for the cheapest or earliest!

Are you ready to fly with eDreams? Check the last minute airfares or book the lowest route price departing from Seattle to Ontario, CA. Stop spending a lot of money to the flight ticket and start enjoying your holiday. No worries, we got your back! eDreams is on your side for a hassle-free and convenient booking experience. You have the privilege to reach the top airline carriers and the cheapest prices. When do you want to depart from Seattle? Adjust your travel dates now and explore the dozens of options to Ontario, CA at great prices. Choose a well-suited flight to Ontario, CA amongst the large selection of options, as everything you are looking for is what eDreams offer. You can even book a hotel and rent a car for the perfect vacation mix. It is much easier to book a flight and hotel together, even cheaper! Go ahead; select the best offer from Ontario, CA to Seattle and you're done! Enjoy your holiday, but first, fasten your seatbelt. We are flying!

Frequently asked questions about flights from Seattle to Ontario, CA

What are the benefits of booking flexible flight tickets?

Using the flexible flight ticket, you're guaranteed a refund or a rebooking option (without fees) in case of flight cancellations when travelling to United States. At eDreams have you covered!

If I want to book flights from Seattle to Ontario, CA at eDreams, how can I find them?

Using our flight search engine, you can find flights from £28 for the route Seattle - Ontario, CA. At eDreams, we always aim at providing our customers with the cheapest option, allowing you to adjust according to stopovers, airports, dates and many other filters.

What would be the best time to book a flight from Seattle to Ontario, CA?

The most popular months to book from Seattle to Ontario, CA are August, January and September.

When would be the best time to travel from Seattle to Ontario, CA?

The best time of the year to visit Ontario, CA from Seattle really depends on lots of personal preferences, especially the price. Regarding popularity, August is the best month to fly to Ontario, CA from Seattle in terms of searches from our customers, followed by February and October. If you would rather avoid the busy season and get away from the crowds October, February and August are the months with fewer searches for Seattle - Ontario, CA.

What is the duration of a flight from Seattle to Ontario, CA?

Flight duration from Seattle to Ontario, CA is around 02:40 hours on average, at an average distance of 1,541 km, for flights for the route (which may have 1 or more stops in other cities in between).

What is the weather like in Ontario, CA compared to Seattle?

The average temperature in Seattle is 31.31 degrees in summer, with precipitation around 9.0 mm ,Ontario, CA's temperatures reach 36.7 during the hot season, with 1.4 average of rain rate . In winter, however, weather indicators show around -0.46 degrees in Ontario, CA, compared to the -3.71 average degrees reported in Seattle. During the winter period, Seattle can register 12.0 mm precipitation, while Ontario, CA have an average of 3.0 mm rain level.

From which airports is it possible to fly from Seattle to Ontario, CA?

The main route from Seattle to Ontario, CA is: Seattle All Airports (SEA) to Ontario International (ONT). The following airlines fly this route: