Compare airlines, prices, and flight durations for your trip
Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Ontario to Seattle. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
A non-stop flight is the most convenient and comfortable way to fly from Ontario to Seattle, despite the fact that sometimes flights with transfers can cost significantly less.
A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Ontario to Seattle:
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Answers to questions about the route that travelers are most interested in.
We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.
Flights from Ontario to Seattle are operated by several airlines — Alaska Airlines, JetHunter, and Southwest Airlines. This allows passengers to flexibly choose flights based on departure time, cost, and additional services. The minimum ticket price starts at $76, making this destination accessible to travelers with different budgets. We help compare all available options in real time, so you can book tickets at the best value for money. The service ensures transparent search and lets you book affordable flights in just a few clicks.
Ontario — Seattle
02/12/2026
Departure
Direct flight
AS654
starting at $203
Ontario — Seattle
02/16/2026
Departure
Direct flight
AS654
starting at $259
Ontario — Seattle
09/06/2026
Departure
Direct flight
011367
starting at $146
Unable to find information about the schedule of direct flights from
The cheapest one-way flight from Ontario to Seattle departs on 02/13/2026, is operated by Southwest Airlines and costs $76
The cheapest roundtrip flight from Ontario to Seattle departs on 01/29/2026, is operated by Frontier Airlines and costs $148
Fastest flight from Ontario to Seattle takes 2h 55m
There are direct flights on this route 3 days a week: Su, Mo, and Th
The distance between Ontario and Seattle is 1557km (965 miles). There are 86 direct flights from Ontario to Seattle. Ontario and Seattle are in the same time zone. Flights from Ontario begin at 6:00 AM. The latest flight from Ontario departs at 6:11 PM
The cheapest flight ticket from Ontario to Seattle according to data for the last 48 hours costs $76
Often the best time to buy tickets from Ontario to Seattle is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Ontario to Seattle can be found flying in these months: February, March, July.
The fastest flights from Ontario to Seattle start from 2 hours 55 minutes in the air.
The following airlines operate direct flights on the route Ontario — Seattle: Alaska Airlines, JetHunter
The cost of a one-way flight from Ontario to Seattle ranges from $76 (February 2026) to $150 (July 2026). On average, the ticket price is about $107–$246.
