Fare Guide

Estimated lowest fares found within 7 days

Cheapest Airline Frontier Airlines

The cheapest airline(s) flying from Ontario to Seattle is Frontier Airlines.

  • Frontier Airlines Frontier Airlines
  • Alaska Airlines Alaska Airlines
  • Spirit Airlines Spirit Airlines
  • United Airlines United Airlines
  • Southwest Airlines Southwest Airlines
  • American Airlines American Airlines
Cheapest Month No data available
No data available

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Cheapest Day of the Week Friday

The cheapest day(s) of the week to fly from Ontario to Seattle is Friday.

  • Sun Sunday
  • Mon Monday
  • Tue Tuesday
  • Wed Wednesday
  • Thu Thursday
  • Fri Friday
  • Sat Saturday
What’s the most popular airline flying from Ontario to Seattle?

The most popular airline flying from Ontario to Seattle is Frontier Airlines. Find the latest flight deals on Wego.

How far is Seattle from Ontario?

The flight distance between Ontario and Seattle is 1556km. Check all available flights on Wego.

All Airports in Ontario

Ontario LA/Ontario International Airport ONT

Popular Airlines flying from Ontario to Seattle

Frontier Airlines ‏()
Alaska Airlines ‏()

Popular Destinations from Seattle

Popular Destinations from Ontario

Popular Hotels in Seattle

Hotels In Popular Destinations