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Soar high with Frontier Airlines at the lowest fares when you fly from Seattle, WA to 50 destinations across the U.S.

Frontier PM.

Book today for the best rates! 31 rows Find cheap fares from Seattle, WA (SEA) to Denver, CO (DEN) with Frontier Airlines. No unpleasant jet lag, no restless legs - there's a whole lot to love about short-haul flights. If you're heading away with Frontier Airlines from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to Denver, CO Airport (DEN-Denver Intl.), the trip will fly by in roughly 3 hours and 44 minutes.

Flight Status. Find out up-to-the-minute info on your flight! Book a Flight. Check In. Prices found by others in the previous 48 hours for one-way flights. Prices shown may also require membership in our travel club, Discount Den . Flights Deals from Denver, CO to Seattle, WA on Frontier. Frontier Flight Status (with flight tracker and live maps) -- view all flights or track any Frontier flight.

Frontier Flight Status (with flight tracker and live maps) -- view all flights or track any Frontier flight Denver Intl: Houston Bush Int'ctl: Wed PM MST: Wed PM CST: FFT A Denver Intl: Dallas-Fort Worth Intl.

The distance from Denver to Seattle is about mi.

Frontier Airlines makes the sky for everyone with its Low Fares Done Right. With over destinations and a route network that connects people to all corners of the country. Frontier enables people to go places they never expected, whether to our main hub in Denver or to our international locations in Mexico, Puerto Rico, Jamaica, Guatemala. Route Map. We fly to some of your favorite places in the U.S., Mexico, Puerto Rico, Jamaica, Guatemala, El Salvador, Dominican Republic, and Canada.