Cheap Flights from Denver (DEN) to Seattle (SEA)

Airlines that fly from Denver International Airport (DEN) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Denver (DEN) to Seattle (SEA)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Fri., 7 Feb. - Mon., 10 Feb.
DEN
Denver
SEA
Seattle
AU$179 Return, found 5 days ago
AU$179
Return
found 5 days ago
Select Alaska Airlines flight, departing Fri., 7 Feb. from Denver to Seattle, returning Mon., 10 Feb., priced at AU$179 found 5 days ago
Delta
Fri., 7 Feb. - Mon., 10 Feb.
DEN
Denver
SEA
Seattle
AU$180 Return, found 5 days ago
AU$180
Return
found 5 days ago
Select Delta flight, departing Fri., 7 Feb. from Denver to Seattle, returning Mon., 10 Feb., priced at AU$180 found 5 days ago
Delta
Fri., 7 Feb. - Mon., 10 Feb.
DEN
Denver
SEA
Seattle
AU$195 Return, found 5 days ago
AU$195
Return
found 5 days ago
Select Delta flight, departing Fri., 7 Feb. from Denver to Seattle, returning Mon., 10 Feb., priced at AU$195 found 5 days ago
Alaska Airlines
Fri., 7 Feb. - Mon., 10 Feb.
DEN
Denver
SEA
Seattle
AU$226 Return, found 5 days ago
AU$226
Return
found 5 days ago
Select Alaska Airlines flight, departing Fri., 7 Feb. from Denver to Seattle, returning Mon., 10 Feb., priced at AU$226 found 5 days ago
Delta
Fri., 7 Feb. - Mon., 10 Feb.
DEN
Denver
SEA
Seattle
AU$227 Return, found 5 days ago
AU$227
Return
found 5 days ago
Select Delta flight, departing Fri., 7 Feb. from Denver to Seattle, returning Mon., 10 Feb., priced at AU$227 found 5 days ago
Delta
Fri., 7 Feb. - Mon., 10 Feb.
DEN
Denver
SEA
Seattle
AU$234 Return, found 5 days ago
AU$234
Return
found 5 days ago
Select Delta flight, departing Fri., 7 Feb. from Denver to Seattle, returning Mon., 10 Feb., priced at AU$234 found 5 days ago
Alaska Airlines
Fri., 7 Feb. - Mon., 10 Feb.
DEN
Denver
SEA
Seattle
AU$240 Return, found 5 days ago
AU$240
Return
found 5 days ago
Select Alaska Airlines flight, departing Fri., 7 Feb. from Denver to Seattle, returning Mon., 10 Feb., priced at AU$240 found 5 days ago
United
Fri., 7 Feb. - Mon., 10 Feb.
DEN
Denver
SEA
Seattle
AU$241 Return, found 5 days ago
AU$241
Return
found 5 days ago
Select United flight, departing Fri., 7 Feb. from Denver to Seattle, returning Mon., 10 Feb., priced at AU$241 found 5 days ago
Alaska Airlines
Fri., 7 Feb. - Mon., 10 Feb.
DEN
Denver
SEA
Seattle
AU$256 Return, found 5 days ago
AU$256
Return
found 5 days ago
Select Alaska Airlines flight, departing Fri., 7 Feb. from Denver to Seattle, returning Mon., 10 Feb., priced at AU$256 found 5 days ago
Delta
Fri., 7 Feb. - Mon., 10 Feb.
DEN
Denver
SEA
Seattle
AU$271 Return, found 5 days ago
AU$271
Return
found 5 days ago
Select Delta flight, departing Fri., 7 Feb. from Denver to Seattle, returning Mon., 10 Feb., priced at AU$271 found 5 days ago
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Flight from Denver to Seattle route information
Origin airport
Denver Intl.
Destination airport
Seattle - Tacoma Intl.
Return price
AU$179
Distance
1635 km

Your quick guide to flights from Denver to Seattle

Pick up great flights from Denver to Seattle

With Expedia, you have your pick of 33 flights a day with 20 airlines covering flights from Denver to Seattle. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Denver to Seattle that take around 3 hours.

Find cheap flights from Denver to Seattle

From the great flight deals with prices currently ranging from AU$179 to AU$271, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Denver to Seattle around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Seattle is normally in February.

Reasons to book your flight from Denver to Seattle with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Denver to Seattle across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Seattle right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Frequently asked questions

How much is a flight from Denver Intl. Airport (DEN) to Seattle - Tacoma Intl. Airport (SEA)?
The lowest price advertised for a round-trip flight from Denver Intl. Airport (DEN) to Seattle - Tacoma Intl. Airport (SEA) is AU$179. But you better act quick. This price is taken from fares offered within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Denver Intl. Airport (DEN) to SEA?
Every airline has a different set of terms and conditions. If you decide to cancel your trip, visit our Customer Service Portal.
How do I find cheap flights from Denver Airport to Seattle - Tacoma Intl. Airport (SEA) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for Denver Intl. Airport (DEN) to Seattle - Tacoma Intl. Airport (SEA) flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from DEN to SEA?
Around 1 650 kilometres separates Denver and SeaTac, so pack some entertainment to keep you busy for a couple of hours. That latest bestseller you’re eager to read will be perfect.
Which airlines fly direct from Denver Airport to Seattle - Tacoma Intl. Airport (SEA)?
Travelling from DIA airport to Sea-Tac Airport is easy when you have a nice range of airlines to choose from. Here are some of the best:

  • United Airlines - (UA) with 147 monthly flights
  • Southwest Airlines - (WN) with 130 monthly flights
  • Alaska Airlines - (AS) with 117 monthly flights
  • Delta Air Lines - (DL) with 91 monthly flights

Are Denver Intl. Airport (DEN) to Seattle - Tacoma Intl. Airport (SEA) flight tickets cheaper when they're purchased at the last minute?
Flight prices fluctuate, so it’s no sure thing. While last-minute flight deals between DIA airport and Seattle - Tacoma Intl. Airport (SEA) are of course possible, it also makes sense to keep an eye on prices well before you fly. In fact, some airlines release their prices up to a year prior to the departure date. Expedia is constantly updating the best bargains around, so check back often and be ready to grab your seat when the fares dip.
Seattle Flight Deals

Seattle Paine Field Intl. Airport

*Available to Expedia members.