Schedule of direct flights from Seattle to Ontario
A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Seattle to Ontario:
Seattle airports overview
Ontario airports overview
Frequently asked questions (FAQ)
Answers to questions about the route that travelers are most interested in.
Special offers and sales on air tickets from Seattle to Ontario
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.
Alternative routes
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Cheapest one way flight
$45
Frontier Airlines
Direct flight
2h 49m
06/03/2025
The cheapest one-way flight from Seattle to Ontario departs on 06/03/2025, is operated by Frontier Airlines and costs $45
Cheapest round trip flight
$75
Spirit Airlines
Direct flight
5h 45m
05/02/2025
The cheapest roundtrip flight from Seattle to Ontario departs on 05/02/2025, is operated by Spirit Airlines and costs $75
The fastest flight
2h 37m
Fastest flight from Seattle to Ontario takes 2h 37m
Direct flights
Several times a week
There are direct flights on this route 6 days a week: Su, Tu, We, Th, Fr, and Sa
Earliest flight
8:00 AM
Latest flight
8:38 PM
Direct flights count
70
Distance
1557km
Timezone difference
0h
The distance between Seattle and Ontario is 1557km (965 miles).There are 70 direct flights from Seattle to Ontario.Seattle and Ontario are in the same time zone.Flights from Seattle begin at 8:00 AM.The latest flight from Seattle departs at 8:38 PM.
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 Seattle to Ontario. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
Frontier Airlines
Su and Th
Starting at $69
We carefully collect statistics on the search and pricing of airlines and, based on these data, we make an assumption about future prices. Thus, you can better understand which season is the cheapest to fly from Seattle to Ontario
Below you will find a list of airlines operating flights on the Seattle — Ontario route and the starting prices for flights of each specific airline on it.
A direct flight is the most convenient and comfortable way to fly from Seattle to Ontario, despite the fact that sometimes flights with transfers can cost significantly less.
