About This Route
Find cheap flights from Denver (DEN) to Seattle (SEA). Compare airlines like United and Alaska, check schedules, and book the best deals starting from $89.
Airlines Operating This Route
Frequently Asked Questions
How long is the flight from Denver to Seattle?
The average flight time from Denver to Seattle is approximately 2h 55m. This may vary depending on the airline, aircraft type, and weather conditions.
What is the cheapest way to fly from Denver to Seattle?
Flights from Denver to Seattle start from $89. We recommend booking 2-3 months in advance and using our search tool to compare prices across all airlines.
Which airlines fly from DEN to SEA?
Airlines operating on this route include United, Alaska, Frontier. Each offers different service levels and pricing.
Hotels in Seattle
via Booking.com
Affiliate link — commission helps us keep this site free
Price Drop Alert
Get notified when Denver → Seattle prices drop.
Alternative dates with lower prices
Shift your trip by a few days and save.
Related Routes
Reviews for Denver to Seattle
No reviews yet. Be the first to share your experience!
Get Weekly Flight Deals
Subscribe to receive the best flight deals and travel tips directly in your inbox.