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Cheapest one-way flights from Seattle (SEA) to Denver (DEN), May

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Dates, airline, and price
Dates	Airline	Price
22 May	Alaska Airlines Direct Flight
12 May	Delta Direct Flight
13 May	Delta Direct Flight
21 May	Delta Direct Flight
23 May	Delta Direct Flight

deals for return flights from Seattle to Denver in May.

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Updated Jul 13, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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Cheapest one-way flights from Seattle (SEA) to Denver (DEN), May

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