SEA
Helping travelers to find the best flight offers
A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Ontario to Seattle:
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
Los Angeles — Seattle
03/29/2025
Departure date
Direct flight
AS6194
Starting at $259
Los Angeles — Seattle
04/11/2025
Departure date
Direct flight
NK630
Starting at $130
Los Angeles — Seattle
06/04/2025
Departure date
Direct flight
AS369
Starting at $198
Ontario — Seattle
04/12/2025
Departure date
Direct flight
AS6288
Starting at $324
The cheapest flight ticket from Ontario to Seattle according to data for the last 48 hours costs $39
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: March, April, July.
The fastest flights from Ontario to Seattle start from 2 hours 49 minutes in the air.
The following airlines operate direct flights on the route Ontario — Seattle: Alaska Airlines, Spirit Airlines
A direct 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.
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.
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 Ontario to Seattle
Below you will find a list of airlines operating flights on the Ontario — Seattle route and the starting prices for flights of each specific airline on it.
Starting at $39
Starting at $87
Starting at $88
Starting at $147
Starting at $152
The cheapest one-way flight from Ontario to Seattle departs on 04/02/2025, is operated by Spirit Airlines and costs $39
The cheapest roundtrip flight from Ontario to Seattle departs on 05/31/2025, is operated by Frontier Airlines and costs $104
Fastest flight from Ontario to Seattle takes 2h 49m
There are direct flights on this route 7 days a week: Su, Mo, Tu, We, Th, Fr, and Sa
The distance between Ontario and Seattle is 1557km (965 miles). There are 70 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 7:07 PM.
We couldn't find any special offers for flights from Ontario to Seattle
