Denver skyline with Rocky Mountains
DEN
Denver
Seattle skyline with Space Needle and Mount Rainier
SEA
Seattle

Denver → Seattle

Frontier Airlines · Round Trip · Nonstop

$275

per person · round trip

Book This Deal

Flight Details

Cabin
Economy
Departs
Apr 14, 2026
Returns
Apr 17, 2026

Planning your trip to Seattle?

Complete your trip with these deals.

Hotels in Seattle

Find the best hotel deals for your stay.

Explore →

Rental Cars in Seattle

Get around with affordable rental car deals.

Explore →

Adventures in Seattle

Explore tours, activities, and experiences.

Explore →