Seattle skyline with Space Needle and Mount Rainier
SEA
Seattle
Ontario California aerial with San Gabriel Mountains
ONT
Ontario

Seattle → Ontario

Frontier Airlines · Round Trip · Nonstop

$198

per person · round trip

Book This Deal

Flight Details

Cabin
Economy
Departs
Jun 17, 2026
Returns
Jun 27, 2026

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Round Trip Seattle to Ontario - $198 on Frontier Airlines | Woven Adventures