Open interactive map →Cheap flights from Denver to Seattle
Fares on the Denver to Seattle route vary noticeably by season and demand. Right now the lowest available price is €135. The route offers both direct and connecting options depending on the date. Booking further in advance typically unlocks lower prices, especially around school holidays and peak travel months. You can also explore cheap flights from Seattle if you want to keep travelling after you land.
A price alert on this page emails you if the fare to Seattle drops below a threshold you set. Searching for mid-week flights and avoiding school holiday windows can meaningfully cut costs on this route. If you're open on destination, use the interactive map from Denver to compare Seattle against nearby alternatives - you may find a cheaper fare to a similar destination.
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Entry requirements for United States
EU passportESTA required (visa-waiver)
US passportN/A (domestic)
Requirements vary by nationality and change without notice. Check requirements for your nationality →
Alternative routes
Other ways to reach Seattle
Frequently asked questions
How much does a flight from Denver to Seattle cost?
The cheapest fare currently available from Denver to Seattle is €135. Prices on this route vary by season, day of week, and how far in advance you book. Click through to compare live availability for your dates before you book. Fares are refreshed regularly as our flight partners publish new availability.
Are there direct flights from Denver to Seattle?
SkyHopp tracks both direct and connecting flights from Denver to Seattle. Connecting flights are often priced lower but add travel time due to the layover. Whether a non-stop option exists on specific dates depends on airline schedules - use the "Direct only" filter on the interactive map to see non-stop options, or check the booking site for a full breakdown by stop count.
When is the cheapest time to fly from Denver to Seattle?
Prices on this route typically dip during shoulder-season months, away from school holidays and public holiday windows. Mid-week departures - particularly Tuesday to Thursday - tend to be cheaper than flights on Fridays and Sundays from Denver. Set a price alert on this page to watch the fare, or click through to compare live dates. Booking 3-6 weeks in advance generally offers the best balance of price and seat availability on this route.