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Cheap flights from Ontario to Seattle from US$106
Alaska Airlines, Frontier Airlines and SkyWest fly nonstop from Ontario to Seattle, about 30 flights a week. The flight takes around 5h 29m, and the cheapest one-way fare we found recently is US$106 on 14 Nov.
Direct flights available ~30 flights a week 5h 29m Cheapest in November Prices checked 13 days ago
Ontario to Seattle at a glance
Cheapest one-wayUS$106Frontier Airlines · 1 stop · Sat 14 NovCheapest returnUS$180Fri 13 Nov – Mon 23 NovFastest flight5h 29mFrontier Airlines · 1 stop
Nonstop flights30/wkAlaska Airlines, Frontier Airlines, SkyWest
Airlines flying nonstop from Ontario to Seattle
3 airlines on this route, about 30 flights a week in total (observed over the last 4 weeks).
Cheapest dates from Ontario to Seattle
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
- 5h 29mfastest found
- Time difference
- NoneSeattle vs Ontario
- Currency in Seattle
- USD
- Airports
- ONT → SEA, BFI
Flights from Ontario to Seattle: questions answered
How much is a flight from Ontario to Seattle?
The cheapest one-way fare we found recently is US$106 with 1 stop, departing in November. Return trips start from US$180. Prices change constantly, so search your dates for the live fare.
Are there direct flights from Ontario to Seattle?
Yes. Alaska Airlines, Frontier Airlines and SkyWest fly this route nonstop, with about 30 flights a week in each direction.
How long is the flight from Ontario to Seattle?
A nonstop flight covers 1,539 km and takes around 5h 29m.
Which airlines fly from Ontario to Seattle?
Alaska Airlines, Frontier Airlines and SkyWest operate nonstop flights on this route.
Which airports serve Ontario and Seattle?
Ontario: Ontario International Airport (ONT). Seattle: Seattle–Tacoma International Airport (SEA) and King County International Airport - Boeing Field (BFI).
