flight_takeoff SEA → DEN

Cheap Flights from Seattle to Denver

Compare fares from Seattle (SEA) to Denver (DEN) across hundreds of airlines. The route covers about 1,022 miles with a typical nonstop time of ~2h 35m.

straighten

Distance

1,022 mi

1,645 km

schedule

Est. flight time

2h 35m

nonstop

flight

Nonstop service

Available

5 carriers

language

Time difference

1 hour ahead

Denver

Flying from Seattle to Denver

The journey from Seattle (SEA) to Denver (DEN) spans roughly 1,022 miles (1,645 km), a nonstop flight of about 2h 35m. On arrival, Denver is 1 hour ahead Seattle. Lets Fly Travel compares live fares across hundreds of airlines so you can find the best deal — and every booking is reviewed by a real travel agent.

Airlines on this route

Carriers that have operated nonstop service between SEA and DEN include:

flightAlaska Airlines flightAmerican Airlines flightFrontier Airlines flightSouthwest Airlines flightUnited Airlines

Airline availability changes over time — search your dates for current operators and fares.

Seattle to Denver — FAQs

How long is the flight from Seattle to Denver? expand_more
A nonstop flight from Seattle (SEA) to Denver (DEN) takes approximately 2h 35m, covering a distance of about 1022 miles (1645 km). Actual flight time varies with aircraft, routing and winds.
Which airlines fly from Seattle to Denver? expand_more
Airlines that have operated nonstop service on the SEA–DEN route include Alaska Airlines, American Airlines, Frontier Airlines, Southwest Airlines, United Airlines. Use our search to compare current carriers, schedules and fares.
Is there a nonstop flight from Seattle to Denver? expand_more
Yes. The SEA–DEN route has nonstop service. Nonstop availability can vary by season and day of week, so check live results for your dates.
How far is Denver from Seattle? expand_more
The distance from Seattle (SEA) to Denver (DEN) is about 1022 miles (1645 km) as the crow flies.
What is the time difference between Seattle and Denver? expand_more
Denver is 1 hour ahead Seattle. Factor the time change into your arrival and connection planning.
When is the best time to book flights from Seattle to Denver? expand_more
For domestic routes like Seattle to Denver, booking about 1–3 months ahead and choosing mid-week departures usually finds the best prices. Avoid peak Friday and Sunday travel where possible.

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