฿1,610 Cheap Flights from Denver (DEN) to Seattle (SEA)

View ฿1,610 flight on Thu, 4 Dec 2025Opens in a new window

Popular airlines 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 and start at ฿1,610 for one-way flights and ฿3,210 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 4 Dec - Sun, 7 Dec
DEN
Denver
SEA
Seattle
฿3,210 Return, found 3 days ago
฿3,210
Return
found 3 days ago
Select Delta flight, departing Thu, 4 Dec from Denver to Seattle, returning Sun, 7 Dec, priced at ฿3,210 found 3 days ago
Delta
Thu, 4 Dec - Sun, 7 Dec
DEN
Denver
SEA
Seattle
฿4,200 Return, found 3 days ago
฿4,200
Return
found 3 days ago
Select Delta flight, departing Thu, 4 Dec from Denver to Seattle, returning Sun, 7 Dec, priced at ฿4,200 found 3 days ago
United
Thu, 4 Dec - Sun, 7 Dec
DEN
Denver
SEA
Seattle
฿4,405 Return, found 3 days ago
฿4,405
Return
found 3 days ago
Select United flight, departing Thu, 4 Dec from Denver to Seattle, returning Sun, 7 Dec, priced at ฿4,405 found 3 days ago
Delta
Fri, 20 Feb - Thu, 26 Feb
DEN
Denver
SEA
Seattle
฿4,530 Return, found 3 days ago
฿4,530
Return
found 3 days ago
Select Delta flight, departing Fri, 20 Feb from Denver to Seattle, returning Thu, 26 Feb, priced at ฿4,530 found 3 days ago
United
Thu, 4 Dec - Sun, 7 Dec
DEN
Denver
SEA
Seattle
฿5,395 Return, found 3 days ago
฿5,395
Return
found 3 days ago
Select United flight, departing Thu, 4 Dec from Denver to Seattle, returning Sun, 7 Dec, priced at ฿5,395 found 3 days ago
United
Thu, 4 Dec - Sun, 7 Dec
DEN
Denver
SEA
Seattle
฿5,585 Return, found 3 days ago
฿5,585
Return
found 3 days ago
Select United flight, departing Thu, 4 Dec from Denver to Seattle, returning Sun, 7 Dec, priced at ฿5,585 found 3 days ago
United
Thu, 4 Dec - Sun, 7 Dec
DEN
Denver
SEA
Seattle
฿5,700 Return, found 3 days ago
฿5,700
Return
found 3 days ago
Select United flight, departing Thu, 4 Dec from Denver to Seattle, returning Sun, 7 Dec, priced at ฿5,700 found 3 days ago
American Airlines
Thu, 4 Dec - Sun, 7 Dec
DEN
Denver
SEA
Seattle
฿5,845 Return, found 3 days ago
฿5,845
Return
found 3 days ago
Select American Airlines flight, departing Thu, 4 Dec from Denver to Seattle, returning Sun, 7 Dec, priced at ฿5,845 found 3 days ago
Delta
Thu, 4 Dec - Sun, 7 Dec
DEN
Denver
SEA
Seattle
฿5,850 Return, found 3 days ago
฿5,850
Return
found 3 days ago
Select Delta flight, departing Thu, 4 Dec from Denver to Seattle, returning Sun, 7 Dec, priced at ฿5,850 found 3 days ago
United
Fri, 20 Feb - Thu, 26 Feb
DEN
Denver
SEA
Seattle
฿5,855 Return, found 3 days ago
฿5,855
Return
found 3 days ago
Select United flight, departing Fri, 20 Feb from Denver to Seattle, returning Thu, 26 Feb, priced at ฿5,855 found 3 days ago

Find the cheapest month to fly from Denver (DEN) to Seattle (SEA)

January is typically the cheapest month to fly

From ฿2,108 - ฿7,043 per traveller.
Flight from Denver to Seattle route information
Origin airport
Denver Intl.
Destination airport
Seattle - Tacoma Intl.
Return price
฿3,210
Distance
1635 km
Average flight time
2 hours 3 mins

Perfect flights from Denver to Seattle

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Denver to Seattle. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Denver Intl. to Seattle - Tacoma Intl. ticket options cater to your travel preferences, with incredible one-way fares from ฿1,610 and roundtrip prices from ฿3,210. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Seattle - Tacoma Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Seattle.

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 ฿3,210. 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.

Explore a world of travel with Expedia

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