← Seattle to Ontario: all datesSee all →
Round trip
Seattle to Ontario 🇺🇸
$213
- Departs
- Mon, Nov 30
- Return
- Sat, Dec 12
- Stops
- 1 stop
- Airline
- Frontier Airlines
- Duration
- 4h 4m
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Other dates on this route
Cheapest one-way fare by departure day Cheap Average Pricey
November 2026
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Work-hours calculator
This flight to Ontario costs you 14h 12m of work.
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Prices come from fares travellers found in the last few days and can change at any time. Last updated Fri, 23 Oct 2026 06:59:53 GMT.
