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Cheap flights from Seattle to Ontario from US$145
Alaska Airlines, Frontier Airlines and SkyWest fly nonstop from Seattle to Ontario, about 28 flights a week. The flight takes around 2h 48m, and the cheapest one-way fare we found recently is US$145 on 9 Nov.
Direct flights available ~28 flights a week 2h 48m Cheapest in November Prices checked 13 days ago
Seattle to Ontario at a glance
Cheapest one-wayUS$145Frontier Airlines · nonstop · Mon 9 NovCheapest returnUS$232Sat 12 Dec – Wed 16 DecFastest flight2h 48mFrontier Airlines · nonstop
Nonstop flights28/wkAlaska Airlines, Frontier Airlines, SkyWest
Airlines flying nonstop from Seattle to Ontario
3 airlines on this route, about 28 flights a week in total (observed over the last 4 weeks).
Cheapest dates from Seattle to Ontario
The lowest one-way fares found recently, cheapest first. Prices change; click through for the live fare.
Good to know
- Distance
- 1,539 km956 miles
- Flight time
- 2h 48mfastest found
- Time difference
- NoneOntario vs Seattle
- Currency in Ontario
- USD
- Airports
- SEA, BFI → ONT
Flights from Seattle to Ontario: questions answered
How much is a flight from Seattle to Ontario?
The cheapest one-way fare we found recently is US$145, nonstop, departing in November. Return trips start from US$232. Prices change constantly, so search your dates for the live fare.
Are there direct flights from Seattle to Ontario?
Yes. Alaska Airlines, Frontier Airlines and SkyWest fly this route nonstop, with about 28 flights a week in each direction.
How long is the flight from Seattle to Ontario?
A nonstop flight covers 1,539 km and takes around 2h 48m.
Which airlines fly from Seattle to Ontario?
Alaska Airlines, Frontier Airlines and SkyWest operate nonstop flights on this route.
Which airports serve Seattle and Ontario?
Seattle: Seattle–Tacoma International Airport (SEA) and King County International Airport - Boeing Field (BFI). Ontario: Ontario International Airport (ONT).
