Cheapest one-way flights from Seattle to Denver in April from $110

AirHint found the following cheapest one-way flights from Seattle (SEA) to Denver (DEN) in April 2026 (see full year).

One-Way flights

07 Apr Alaska Airlines direct

Also check the deals for return flights from Seattle to Denver in April.

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.

Book a cheap hotel in Denver

Cheap car rent in Denver

Feel free to contact us with any feedback or request another flight research.