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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There are most likely no direct flights on the Denver — Seattle route
Denver — Seattle
06/09/2026
Departure
Direct flight
F91175
starting at $194
Denver — Seattle
07/27/2026
Departure
Direct flight
WN3856
starting at $234
starting at $134
starting at $234
The Denver — Seattle route is served by multiple airlines, including Frontier Airlines and Southwest Airlines. This is convenient for those who want the best balance of price, schedule, and travel conditions. Tickets start from $134, 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 one-way flight from Denver to Seattle departs on 07/26/2026, is operated by Frontier Airlines and costs $134
The cheapest roundtrip flight from Denver to Seattle departs on 06/22/2026, is operated by Frontier Airlines and costs $257
Fastest flight from Denver to Seattle takes 3h 7m
There are direct flights on this route 2 days a week: Mo and Tu
The distance between Denver and Seattle is 1641km (1017 miles). The time difference between Denver and Seattle is 1h
We couldn't find any special offers for flights from Denver to Seattle
The cheapest flight ticket from Denver to Seattle according to data for the last 48 hours costs $134
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: July, June.
The fastest flights from Denver to Seattle start from 3 hours 7 minutes in the air.
The following airlines operate direct flights on the route Denver — Seattle: Frontier Airlines, Southwest Airlines
In different months, ticket prices from Denver to Seattle vary: minimum — $134 (July 2026), maximum — $152 (June 2026). Typically, the flight costs $143–$152.