฿2,915 Cheap Flights from Seattle (SEA) to Denver (DEN)

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Popular airlines from Seattle-Tacoma International Airport (SEA) to Denver International Airport (DEN)

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

Prices were available within the past 7 days and start at ฿2,915 for one-way flights and ฿5,170 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 11 Oct - Sat, 18 Oct
SEA
Seattle
DEN
Denver
฿5,170 Return, found 6 days ago
฿5,170
Return
found 6 days ago
Select Delta flight, departing Sat, 11 Oct from Seattle to Denver, returning Sat, 18 Oct, priced at ฿5,170 found 6 days ago
Delta
Sat, 11 Oct - Sat, 18 Oct
SEA
Seattle
DEN
Denver
฿5,765 Return, found 6 days ago
฿5,765
Return
found 6 days ago
Select Delta flight, departing Sat, 11 Oct from Seattle to Denver, returning Sat, 18 Oct, priced at ฿5,765 found 6 days ago
Delta
Wed, 5 Nov - Sat, 8 Nov
SEA
Seattle
DEN
Denver
฿5,830 Return, found 3 days ago
฿5,830
Return
found 3 days ago
Select Delta flight, departing Wed, 5 Nov from Seattle to Denver, returning Sat, 8 Nov, priced at ฿5,830 found 3 days ago
Delta
Mon, 13 Oct - Fri, 24 Oct
SEA
Seattle
DEN
Denver
฿6,355 Return, found 3 days ago
฿6,355
Return
found 3 days ago
Select Delta flight, departing Mon, 13 Oct from Seattle to Denver, returning Fri, 24 Oct, priced at ฿6,355 found 3 days ago
Delta
Sat, 27 Sep - Mon, 29 Sep
SEA
Seattle
DEN
Denver
฿6,680 Return, found 10 hours ago
฿6,680
Return
found 10 hours ago
Select Delta flight, departing Sat, 27 Sep from Seattle to Denver, returning Mon, 29 Sep, priced at ฿6,680 found 10 hours ago
United
Wed, 5 Nov - Sat, 8 Nov
SEA
Seattle
DEN
Denver
฿6,820 Return, found 3 days ago
฿6,820
Return
found 3 days ago
Select United flight, departing Wed, 5 Nov from Seattle to Denver, returning Sat, 8 Nov, priced at ฿6,820 found 3 days ago
Delta
Mon, 13 Oct - Fri, 24 Oct
SEA
Seattle
DEN
Denver
฿7,010 Return, found 3 days ago
฿7,010
Return
found 3 days ago
Select Delta flight, departing Mon, 13 Oct from Seattle to Denver, returning Fri, 24 Oct, priced at ฿7,010 found 3 days ago
United
Wed, 5 Nov - Sat, 8 Nov
SEA
Seattle
DEN
Denver
฿7,145 Return, found 3 days ago
฿7,145
Return
found 3 days ago
Select United flight, departing Wed, 5 Nov from Seattle to Denver, returning Sat, 8 Nov, priced at ฿7,145 found 3 days ago
United
Sat, 11 Oct - Sat, 18 Oct
SEA
Seattle
DEN
Denver
฿7,150 Return, found 6 days ago
฿7,150
Return
found 6 days ago
Select United flight, departing Sat, 11 Oct from Seattle to Denver, returning Sat, 18 Oct, priced at ฿7,150 found 6 days ago
American Airlines
Wed, 5 Nov - Sat, 8 Nov
SEA
Seattle
DEN
Denver
฿11,470 Return, found 3 days ago
฿11,470
Return
found 3 days ago
Select American Airlines flight, departing Wed, 5 Nov from Seattle to Denver, returning Sat, 8 Nov, priced at ฿11,470 found 3 days ago

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

January is typically the cheapest month to fly

From ฿2,108 - ฿7,671 per traveller.

Graph displaying average flight prices per month

Flight from Seattle to Denver route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Denver Intl.
Airlines serving
American Airlines, Delta, United
Return price
฿5,170
Distance
1635 km
Average flight time
3 hours 41 mins

Perfect flights from Seattle to Denver

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Seattle to Denver. 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 Denver, 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 Seattle - Tacoma Intl. to Denver Intl. ticket options cater to your travel preferences, with incredible one-way fares from ฿2,915 and roundtrip prices from ฿5,170. 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 Denver Intl. and explore Denver 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 SEA to DEN travel arrangements today and embark on the journey of a lifetime in Denver.

Frequently asked questions

How much is a flight from SEA to Denver Airport?
If you're travelling between SEA and Denver Intl. Airport (DEN), round-trip journeys start from ฿5,170. This price is based on fares available within the last 7 days on Expedia for flights departing within the next year, so don't let a good deal pass you by. Book now and save yourself money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Sea-Tac Airport to Denver Airport?
This can differ between air carriers, as each has its own terms and conditions. Visit the Customer Service Portal, where there are instructions on how to cancel online.
How do I find cheap flights from Sea-Tac Airport to Denver Intl. Airport (DEN) 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 Sea-Tac Airport to Denver Intl. Airport (DEN) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from SEA to DIA airport?
The flight distance from SeaTac to Denver is 1,650 kilometres. Bring along a snack, a drink and an interesting novel to read. Keep yourself entertained and the time will fly by.
Which airlines fly direct from SEA to Denver Intl. Airport (DEN)?
It's easy to fly directly from Sea-Tac Airport to Denver Airport. These are the top carriers that operate nonstop services on this route:

  • 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 SEA to DEN flight tickets cheaper when they're purchased at the last minute?
It is possible to get a great last-minute deal from SEA to Denver Intl. Airport (DEN), but there's no guarantee. As many airlines publish prices up to 12 months in advance, it's worthwhile keeping an eye on fares early and being ready to pounce when you see a bargain. Expedia compares air carrier prices and updates flight deals all the time, so you can be sure you're always getting the latest offers.

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