There are most likely no direct flights on the Denver — Seattle route
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A non-stop flight is the most convenient and comfortable way to fly from Denver to Seattle, despite the fact that sometimes flights with transfers can cost significantly less.
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Answers to questions about the route that travelers are most interested in.
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In different months, ticket prices from Denver to Seattle vary: minimum — $117 (November 2026), maximum — $128 (December 2026). Typically, the flight costs $123–$128.
There are most likely no direct flights on the Denver — Seattle route
Denver — Seattle
11/14/2026
Departure
Direct flight
F91175
starting at $181
Denver — Seattle
11/12/2026
Departure
Direct flight
AS421
starting at $229
starting at $135
starting at $229
The Denver — Seattle route is served by multiple airlines, including Frontier Airlines and Alaska Airlines. This is convenient for those who want the best balance of price, schedule, and travel conditions. Tickets start from $135, and depending on season and promotions, even better deals may appear. With our service, you can easily compare available options and book tickets that match your plans. The variety of carriers allows flexible choices and comfortable travel without overpaying.
The cheapest flight ticket from Denver to Seattle according to data for the last 48 hours costs $135
Often the best time to buy tickets from Denver to Seattle is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Denver to Seattle can be found flying in these months: November, December.
The fastest flights from Denver to Seattle start from 6 hours 39 minutes in the air.
The following airlines operate direct flights on the route Denver — Seattle: Frontier Airlines, Alaska Airlines
The cheapest one-way flight from Denver to Seattle departs on 11/14/2026, is operated by Frontier Airlines and costs $135
The cheapest roundtrip flight from Denver to Seattle departs on 12/02/2026, is operated by Frontier Airlines and costs $201
Fastest flight from Denver to Seattle takes 6h 39m
There are direct flights on this route 2 days a week: Th and Sa
The distance between Denver and Seattle is 1641km (1017 miles). There are 131 direct flights from Denver to Seattle. The time difference between Denver and Seattle is 1h. Flights from Denver begin at 6:00 AM. The latest flight from Denver departs at 9:15 PM
We couldn't find any special offers for flights from Denver to Seattle