Unable to find information about the schedule of direct flights from
Helping travelers to find the best flight offers
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.
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.
A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Seattle to Ontario:
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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.
Unable to find information about the schedule of direct flights from
Seattle — Los Angeles
12/12/2025
Departure
Direct flight
AS740
Starting at $688
Seattle — Los Angeles
01/17/2026
Departure
Direct flight
F91178
Starting at $105
Seattle — Los Angeles
01/22/2026
Departure
Direct flight
WN3568
Starting at $74
Seattle — Los Angeles
01/23/2026
Departure
Direct flight
AS530
Starting at $146
Seattle — Los Angeles
07/21/2026
Departure
Direct flight
AS583
Starting at $221
Seattle — Los Angeles
03/07/2026
Departure
Direct flight
F92176
Starting at $102
Seattle — Los Angeles
12/09/2025
Departure
Direct flight
011390
Starting at $169
Seattle — Ontario
01/09/2026
Departure
Direct flight
AS489
Starting at $141
Starting at $73
Starting at $28
Starting at $74
Starting at $169
The Seattle — Ontario route is served by a wide range of airlines: 4 in total, including Alaska Airlines, Frontier Airlines, Southwest Airlines, and JetHunter. Competition among carriers gives passengers the opportunity to find tickets at attractive fares — with prices starting from $28. Our service helps compare all available offers within seconds and choose the most convenient option. You can filter flights by price, departure time, or baggage rules to make your trip as comfortable as possible. With so many airlines, there’s always a chance to catch special promotions and save.
The cheapest one-way flight from Seattle to Ontario departs on 01/17/2026, is operated by Frontier Airlines and costs $28
The cheapest roundtrip flight from Seattle to Ontario departs on 02/07/2026, is operated by Alaska Airlines and costs $92
Fastest flight from Seattle to Ontario takes 2h 35m
There are direct flights on this route 4 days a week: Mo, Th, Fr, and Sa
The distance between Seattle and Ontario is 1557km (965 miles). There are 80 direct flights from Seattle to Ontario. Seattle and Ontario are in the same time zone. Flights from Seattle begin at 7:10 AM. The latest flight from Seattle departs at 9:35 PM
The cheapest flight ticket from Seattle to Ontario according to data for the last 48 hours costs $28
Often the best time to buy tickets from Seattle to Ontario is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Seattle to Ontario can be found flying in these months: January, February, December.
The fastest flights from Seattle to Ontario start from 2 hours 35 minutes in the air.
The following airlines operate direct flights on the route Seattle — Ontario: Alaska Airlines, Frontier Airlines, Southwest Airlines
The minimum one-way ticket price from Seattle to Ontario is $30 (January 2026), while the maximum is $192 (July 2026). On average, a ticket costs $116–$150.
