Fare Guide
Estimated lowest fares found within 7 days
Cheapest Airline
Cheapest Month
June
Cheapest Day of the Week
Saturday
Cheapest Airline
The cheapest airline(s) flying from Ontario to Seattle is Frontier Airlines.
Cheapest Month
June
Travel Period: June 2025 - May 2026
The cheapest month(s) to fly from Ontario to Seattle is June.
Cheapest Day of the Week
Saturday
The cheapest day(s) of the week to fly from Ontario to Seattle is Saturday.
How far is Seattle from Ontario?
The flight distance between Ontario and Seattle is 1556km. Check all available flights on Wego.
Popular Destinations From Seattle
Popular Destinations From Ontario
Popular Hotels in Seattle
- Palihotel Seattle
- Sonder The Boylston
- Crowne Plaza SEATTLE-DOWNTOWN
- Hilton Motif Seattle
- Fairmont Olympic Hotel - Seattle
- The Charter Hotel Seattle, Curio Collection by Hilton
- Holiday Inn SEATTLE DOWNTOWN - LAKE UNION
- La Quinta Inn & Suites by Wyndham Seattle Downtown
- The Westin Seattle
- Residence Inn Seattle Downtown/Lake Union
