Cheap flights from Ontario to Seattle, WA, United States (ONT - SEA)

As a rule, buying flight tickets from Ontario to Seattle, WA expends a lot. Using our service of searching for cheap flight tickets, you will be able to save a significant sum of money! We will help tip to buy flight tickets from Ontario to Seattle, WA at the most favorable prices.

Out service helps you to find tickets from Ontario to Seattle, WA in the most reliable travel agencies and booking systems, including all the airline companies. We don't sell tickets and don't do any surcharges, we just find the best offers - you choose yourself where you want to buy flight tickets Ontario - Seattle, WA at the best price!

We also recommend you to look through the prices for return tickets from Seattle, WA to Ontario.

Airfares found by our users in the past 24 hours

The cheapest flight from Ontario to Seattle, WA is £113 on Alaska Airlines, departing on 14.01.2025 and returning on 18.01.2025.
The price for these dates could change. Use search to get the best price.
AirlineDeparture dateReturn datePrice
Alaska Airlines14.01.202518.01.2025from £113

Average round-trip airfares from Ontario to Seattle, WA by months

MonthRound-Trip
December 202431.12 - 05.01from £252
January 202514.01 - 18.01from £113
February 2025find now
March 2025find now
April 2025find now
May 202520.05 - 21.05from £158
June 2025find now
July 2025find now
August 2025find now
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November 2025find now

The price which were found by our clients for the latest several days. Given ticket prices could change. It's connected with the presence of flight tickets while booking.

Airlines are flying from Ontario to Seattle, WA

American Airlines
Find Flights to Seattle, WA