Cheap flights from Denver, CO to Seattle, WA

Flights starting at £47. Choose between Linear Air, United Airlines, or Frontier Airlines to find the best price.

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Tips to know when travelling to Seattle

Cheapest one-way trip

£47

Cheapest nonstop round-trip

£47

Cheapest round-trip

£72

Average round-trip

£129

Nonstop flights in December

£47 – £695

Round trips

Denver DENSeattle SEA

Frontier Airlines

£72
Denver DENSeattle SEA

Frontier Airlines

£89

Updated:

1646 km
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

Seattle travel tips

1) How to get to the city center from Seattle-Tacoma International Airport?

Link Light Rail is a great option how to get from the Seattle-Tacoma International Airport to the city center. The way will take approximately 30 minutes. The train comes every 15 minutes or even more often. We recommend using an ORCA card to get around the city for less money. Give it a try!

2) Seattle’s Museum of Flight is waiting for all aviation lovers

Seattle’s Museum of Flight can boast about a huge collection of planes, flight-related exhibits, and historical objects. There is a gallery specialised in space travel history as well as a section with flight innovations. The museum is open from Thursday to Monday. Aviation lovers, you are welcome!

3) To visit Seattle in autumn is an excellent idea

No doubt, Seattle is excellent all year round. However, autumn is special in this city. This season fills Seattle with festivals, music, art, and colourful foliage. Discounts at hotels can go as a pleasant bonus. Take advantage!

United States COVID-19 travel restrictions

Your trip summary

Most travelers from Denver, DEN can enter Seattle, SEA.

Departure

Additional information
  • Masks are recommended in certain settings

Information is provided as guidance only and accurate at the time of publishing. Always check government websites and airline materials before booking and traveling.

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 London, Calgary, Dublin, Manchester, New York, San Francisco, Glasgow, Chicago, Las Vegas, Toronto, Washington, D.C., Los Angeles, Buffalo, Riga, Austin, San Jose, Phoenix, Detroit, Houston, Vancouver.
What are the most popular routes to and from Seattle?
Travelers frequently search for route combinations, such as Seattle and London, Dublin, Manila, Bangkok, Tallinn, Vilnius, Detroit, New York, Manchester, Melbourne, Los Angeles, Chicago, Paris, Hong Kong, Washington, D.C., Toronto, Denpasar, Atlanta, Dallas, San Salvador.
Which airports are there in Denver?
Denver is mainly served by Denver International. But there are other airports nearby, including Centennial Airport, Rocky Mountain Metropolitan Airport.
What airports are near Denver?
The main airport in Denver is Denver International. It is also served by Colorado Springs, Laramie Regional, Eagle County Regional, Cheyenne 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, Yakima Air Terminal, Pangborn Memorial, 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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