Denver (DEN) → Seattle (SEA)
Denver International Airport to Seattle–Tacoma International Airport · 888 nm (1,645 km) · about 2.5 h nonstop
Cheapest economy fares, checked daily · 2 days of history
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Economy
last checked 14h agoFrontier Airlines · 1 stop · 6h 23m · travel Sep 21
Airlines selling the cheapest fares
Which carrier had the lowest fare on each of our checks over the last 90 days.
- Frontier Airlines ×2
About this route
Denver (DEN) to Seattle (SEA) is one of the busiest air routes in its market (US domestic). It links Denver International Airport in United States with Seattle–Tacoma International Airport in United States. The great-circle distance is about 888 nautical miles (1,022 statute miles), so expect roughly 2.5 hours in the air nonstop.
Every night we ask our fare provider for the cheapest one-way economy fare other travellers recently found on this route and record it, with the airline and the seller it was found with. A fare is flagged as a deal when it falls at least 30% below the route's 90-day typical price. Prices are a research starting point, not live availability — the booking links open the itinerary so you can confirm what's on sale right now.
Fares are approximate, from public sources, and can be stale — always verify before booking.