flight_takeoff DEN → SEA

Cheap Flights from Denver to Seattle

Compare fares from Denver (DEN) to Seattle (SEA) 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 behind

Seattle

Flying from Denver to Seattle

The journey from Denver (DEN) to Seattle (SEA) spans roughly 1,022 miles (1,645 km), a nonstop flight of about 2h 35m. On arrival, Seattle is 1 hour behind Denver. 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 DEN and SEA include:

flightAlaska Airlines flightAmerican Airlines flightFrontier Airlines flightSouthwest Airlines flightUnited Airlines

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

Denver to Seattle — FAQs

How long is the flight from Denver to Seattle? expand_more
A nonstop flight from Denver (DEN) to Seattle (SEA) 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 Denver to Seattle? expand_more
Airlines that have operated nonstop service on the DEN–SEA 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 Denver to Seattle? expand_more
Yes. The DEN–SEA route has nonstop service. Nonstop availability can vary by season and day of week, so check live results for your dates.
How far is Seattle from Denver? expand_more
The distance from Denver (DEN) to Seattle (SEA) is about 1022 miles (1645 km) as the crow flies.
What is the time difference between Denver and Seattle? expand_more
Seattle is 1 hour behind Denver. Factor the time change into your arrival and connection planning.
When is the best time to book flights from Denver to Seattle? expand_more
For domestic routes like Denver to Seattle, booking about 1–3 months ahead and choosing mid-week departures usually finds the best prices. Avoid peak Friday and Sunday travel where possible.

More flights from Denver

More flights to Seattle