← Back to Deals
Book This Deal
SEA
Seattle
ONT
Ontario
Seattle → Ontario
Frontier Airlines · Round Trip · Nonstop
Save $107 (50% off)
Compared to the typical price of $216
$109$216
per person · round trip
Flight Details
Cabin
Economy
Departs
Apr 21, 2026
Returns
Apr 25, 2026
Planning your trip to Ontario?
Complete your trip with these deals.
Hotels in Ontario
Find the best hotel deals for your stay.
Coming soon →Rental Cars in Ontario
Get around with affordable rental car deals.
Coming soon →Adventures in Ontario
Explore tours, activities, and experiences.
Coming soon →