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 $82 on Frontier Airlines, departing on 10.05.2024 and returning on 17.05.2024.
The price for these dates could change. Use search to get the best price.
AirlineDeparture dateReturn datePrice
Frontier Airlines10.05.202417.05.2024from $82

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

MonthRound-Trip
March 202428.03 - 30.03from $250
April 202426.04 - 30.04from $86
May 202410.05 - 17.05from $82
June 202410.06 - 22.06from $108
July 202415.07 - 19.07from $119
August 202405.08 - 10.08from $121
September 202406.09 - 13.09from $199
October 202419.10 - 22.10from $194
November 202416.11 - 17.11from $227
December 202404.12 - 12.12from $233
January 202517.01 - 27.01from $283
February 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