Cheapest one-way flights from Denver to Seattle in April from 67€

Best time to book flights for Denver (DEN) to Seattle (SEA) flights at AirHint

AirHint found the following cheapest one-way flights from Denver (DEN) to Seattle (SEA) in April 2025 (see full year).

One-Way flights

15 Apr Frontier Airlines direct
26 Apr Delta direct
29 Apr Delta direct

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

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