Flights from Seattle to Denver
Nonstop flights from Seattle (SEA) to Denver (DEN) take about 2h 33m (1,645 km). Frontier Airlines, Alaska Airlines and United Airlines fly it. Lowest fare seen: $47 one-way, nonstop (12 Oct 2026).
All flights from Seattle →All flights to Denver →
When you land in Denver
The airport transfer and the few things worth sorting before you fly.
Airport transfer
DEN → Denver, booked before you fly
A private driver meets you in arrivals at a price agreed when you book. Book with Welcome Pickups.
See transfer prices
Seattle Airport · 2 lounges
Find hotels in Denver
Hotels, hostels & more · Expedia
Airlines flying Seattle to Denver
Carriers on SEA–DEN according to our route data and nonstop fares seen as of 12 Oct 2026. Not a complete list.
Seattle to Denver fares by month
Cheapest month seen for a nonstop flight: Nov 2026, from $62 one-way. Lowest one-way fares seen for departures in each month, read 22 Oct 2026.
| Departing | Nonstop from | Cheaper with stops |
|---|---|---|
| Oct 2026 | $17423 Oct 2026 · Frontier Airlines | $141 · 1 stop27 Oct 2026 · Frontier Airlines |
| Nov 2026 | $6214 Nov 2026 · Frontier Airlines | — |
| Apr 2027 | $16528 Apr 2027 · Alaska Airlines | — |
When to go for the lowest fare
The next few weeks were the cheapest to fly: from $62 in November 2026, against $165 at best later on.
From Travelpayouts flight-search data, city to city (Seattle to Denver, any airport), USD, read 22 Oct 2026. These are fares that were on sale, not a guarantee of today's price; an airline is named only where we know it flies this route.
More for this trip
Frequently asked questions — Seattle to Denver flights
How long is the flight from Seattle to Denver?
How far is Seattle from Denver by air?
Which airlines fly from Seattle to Denver?
How much does a flight from Seattle to Denver cost?
What is the cheapest month to fly from Seattle to Denver?
Do I need a visa to travel from Seattle to Denver?
Sources: fares from Travelpayouts flight-search data, seen 12 Oct 2026; airlines from each carrier's published network and nonstop fares on sale; distance from OurAirports coordinates; flight time estimated from distance. Fares change daily.
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