Cheap flights from Denver, CO to Seattle, WA

Flights starting at $58. Choose between Linear Air, United Airlines, or Frontier Airlines to find the best price.

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Cheapest one-way trip

$58

Cheapest nonstop round-trip

$58

Cheapest round-trip

$87

Average round-trip

$157

Nonstop flights in November

$58 – $845

Round trips

Denver DENSeattle SEA

Frontier Airlines

$87
Denver DENSeattle SEA

Multiple carriers

$117

Updated:

1023 miles
Distance
Duration
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Travelers usually depart from Denver International, Denver Union Station, Centennial Airport, or Rocky Mountain Metropolitan Airport when they travel from Denver to Seattle. Book your trip to arrive at Seattle–Tacoma International, Seattle, WA - King Street Station, Seattle, WA - Greyhound Station, Seattle, WA - Ferry Terminal, or Boeing Field. The distance between Denver and Seattle is 1646 km. The most popular airlines for this route are Linear Air, United Airlines, Frontier Airlines, Alaska Airlines, and Delta Air Lines. Denver and Seattle have 327 direct flights per week.

Weekly direct flights

MondaysTuesdaysWednesdaysThursdaysFridaysSaturdaysSundays
Direct flights1414158111415
Fly direct with

Alaska Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.

Delta Air Lines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.

Frontier Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.

United Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.

Check-in for a flight from Denver to Seattle

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
Linear Air O2YesNo
United AirlinesUALUAYesNo
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
Alaska AirlinesASAASYesOpens 24 days before flight
Closes 1 hours before flight
Delta Air LinesDALDLYesOpens 24 days before flight
Closes 1 hours before flight
Learn more about COVID-19 restrictions in United States in our dedicated Stories article.

Frequently asked questions

How long does it take to travel from Denver to Seattle?
A one-way nonstop (direct) flight between Denver and Seattle takes around 3.1 hours.
What is the flight distance between Denver and Seattle?
The flight distance between Denver and Seattle is 1646 km.
What airlines offer nonstop (direct) flights between Denver and Seattle?
Several carriers operate flights between Denver and Seattle. Airlines offering nonstop (direct) flights include Delta Air Lines, Alaska Airlines, Frontier Airlines, United Airlines.
What are the most popular routes to and from Denver?
Travelers frequently search for route combinations, such as Denver and Las Vegas, Los Angeles, Chicago, Minneapolis, Dallas, Washington, D.C., Orlando, Phoenix, San Francisco, Houston, San Diego, Austin, Atlanta, Paris, Philadelphia, New York, Miami, London, Tampa, Detroit.
What are the most popular routes to and from Seattle?
Travelers frequently search for route combinations, such as Seattle and Atlanta, Houston, Las Vegas, Austin, Orlando, Los Angeles, Salt Lake City, Mexico City, Paris, London, Washington, D.C., Detroit, New York, Minneapolis, Phoenix, Dallas, Raleigh, Charlotte, Cleveland, Chicago.
Which airports are there in Denver?
Denver is mainly served by Denver International. But there are other airports nearby, including Rocky Mountain Metropolitan Airport, Centennial Airport.
What airports are near Denver?
The main airport in Denver is Denver International. It is also served by Colorado Springs, Cheyenne Regional, Laramie Regional, Eagle County Regional, Pueblo Memorial.
What airports are near Seattle?
The main airport in Seattle is Seattle–Tacoma International. It is also served by Portland International, Vancouver International, Bellingham International, Paine Field Everett, Abbotsford International, Pangborn Memorial, Yakima Air Terminal, Victoria Inner Harbour SPB, Friday Harbor Airport, Vancouver Harbour Flight Centre.
What buses and trains depart from Denver?
A number of bus and train companies depart from Denver, including Amtrak train, Greyhound.
Is it possible to combine flights, buses, and trains in one itinerary when traveling between Denver and Seattle?
What is Virtual Interlining and how do I use it?
Which airlines fly between Denver and Seattle?
When's the best time to travel between Denver and Seattle?
What flights operate between Denver and Seattle?
How many airports are there near Denver?
How many airports are there near Seattle?
Is it possible to reach Denver by bus or train?
What time do nonstop (direct) flights between Denver and Seattle depart?
What time do nonstop (direct) flights between Denver and Seattle arrive?
What time do flights between Denver and Seattle depart?
What time do flights between Denver and Seattle arrive?

Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.

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