Flights Denver → Seattle

One way · Economy · 1 adult · price per person · next 14 days from September 10, 2026

Last observed price on Aviasales for 2 of 15 dates; the lowest is $143. Prices are not guaranteed and are confirmed at booking time.

Last observed price by date

Date	Last observed price	Flight	Departure	Arrival	Stops
Thu, Sep 10	—	—	—	—	—
Fri, Sep 11	—	—	—	—	—
Sat, Sep 12	$154	Frontier Airlines F92341 (1st of 2 flights)	1:10 PM Denver (DEN)	6:36 PM Sea-Tac (SEA)	1 stop · Los Angeles International
Sun, Sep 13	—	—	—	—	—
Mon, Sep 14	—	—	—	—	—
Tue, Sep 15	—	—	—	—	—
Wed, Sep 16	$143lowest	Frontier Airlines F92341 (1st of 2 flights)	12:42 PM Denver (DEN)	6:10 PM Sea-Tac (SEA)	1 stop · Los Angeles International
Thu, Sep 17	—	—	—	—	—
Fri, Sep 18	—	—	—	—	—
Sat, Sep 19	—	—	—	—	—
Sun, Sep 20	—	—	—	—	—
Mon, Sep 21	—	—	—	—	—
Tue, Sep 22	—	—	—	—	—
Wed, Sep 23	—	—	—	—	—
Thu, Sep 24	—	—	—	—	—

Price not guaranteed: it is confirmed on Aviasales at booking time. How it works

Denver, United States (DEN, city code)

Denver International (DEN).

Seattle, United States (SEA, city code)

Seattle-Tacoma (SEA).

FromToDeparture date