Cheapest return flights from Seattle to Denver in February from $176

AirHint found the following cheapest return flights from Seattle (SEA) to Denver (DEN) in February 2026 (see full year).

Return flights

01 Feb - 07 Feb Frontier Airlines direct
19 Feb - 22 Feb Frontier Airlines direct
12 Feb - 16 Feb United direct

Also check the deals for one-way flights from Seattle to Denver in February.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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