Flights from Seattle to Denver
Seattle and Denver are about 1,650 km apart, and the scheduled nonstop flight takes about 2 h 38 min. Southwest Airlines has a nonstop flight on this route. You compare the fares in one search and book with the airline or travel agency you choose, so you see the final price before you pay.
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Updated 22 October 2026
Plan your trip to Denver
Nonstop flights from Seattle to Denver
Seattle and Denver are about 1,650 km apart, and the scheduled nonstop flight takes about 2 h 38 min. The distance is the great-circle distance between the two airports, so the route a flight actually flies is a little longer. The flight arrives at DEN.
| Fact | Detail |
|---|---|
| From | Seattle (SEA) |
| To | Denver (DEN) |
| Distance | About 1650 km |
| Time in the air | About 2 h 38 min |
| Airlines on the route | Southwest Airlines |
Airlines that fly from Seattle to Denver
Southwest Airlines has a nonstop flight on this route. The scheduled time comes from the published schedule, checked on 22 October 2026.
Return flights: Denver to Seattle
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The airports of the route
How to book
Morsilla Travel brings flight options together in one search. When you choose a ticket you continue with your chosen airline or travel agency, where you can check the conditions of your trip.
Sources
- Source for the flight duration from Seattle to Denver. — southwest.com (checked 22 October 2026)
Frequently asked questions
How long is the flight from Seattle to Denver?
The scheduled nonstop flight takes about 2 h 38 min. The two airports are about 1,650 km apart, measured as the great-circle distance between them.
Which airlines fly this route nonstop?
Southwest Airlines has a nonstop flight on this route. The Morsilla Travel search compares the fares of that airline.
Which airports do the flights from Seattle to Denver use?
They leave from SEA and arrive at DEN. The check-in, the security and the baggage claim all happen in the terminals of those two airports.