₩164,600 Cheap Flights from Seattle (SEA) to Denver (DEN)

View ₩164,600 flight on Sat, May 2, 2026Opens in a new window

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

Cheap Flights from Seattle to Denver (SEA-DEN)

Prices were available within the past 7 days and start at ₩164,600 for one-way flights and ₩327,000 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, May 6 - Wed, May 27
SEA
Seattle
DEN
Denver
₩327,000 Roundtrip, found 18 hours ago
₩327,000
Roundtrip
found 18 hours ago
Select Alaska Airlines flight, departing Wed, May 6 from Seattle to Denver, returning Wed, May 27, priced at ₩327,000 found 18 hours ago
Alaska Airlines
Wed, May 6 - Tue, May 26
SEA
Seattle
DEN
Denver
₩342,100 Roundtrip, found 18 hours ago
₩342,100
Roundtrip
found 18 hours ago
Select Alaska Airlines flight, departing Wed, May 6 from Seattle to Denver, returning Tue, May 26, priced at ₩342,100 found 18 hours ago
Delta
Sat, May 23 - Sat, May 30
SEA
Seattle
DEN
Denver
₩357,100 Roundtrip, found 17 hours ago
₩357,100
Roundtrip
found 17 hours ago
Select Delta flight, departing Sat, May 23 from Seattle to Denver, returning Sat, May 30, priced at ₩357,100 found 17 hours ago
Delta
Fri, May 1 - Thu, May 7
SEA
Seattle
DEN
Denver
₩359,300 Roundtrip, found 4 days ago
₩359,300
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, May 1 from Seattle to Denver, returning Thu, May 7, priced at ₩359,300 found 4 days ago
Alaska Airlines
Wed, May 6 - Mon, May 25
SEA
Seattle
DEN
Denver
₩372,300 Roundtrip, found 18 hours ago
₩372,300
Roundtrip
found 18 hours ago
Select Alaska Airlines flight, departing Wed, May 6 from Seattle to Denver, returning Mon, May 25, priced at ₩372,300 found 18 hours ago
Alaska Airlines
Wed, May 27 - Sat, Jun 13
SEA
Seattle
DEN
Denver
₩385,800 Roundtrip, found 18 hours ago
₩385,800
Roundtrip
found 18 hours ago
Select Alaska Airlines flight, departing Wed, May 27 from Seattle to Denver, returning Sat, Jun 13, priced at ₩385,800 found 18 hours ago
Alaska Airlines
Thu, May 7 - Mon, May 25
SEA
Seattle
DEN
Denver
₩387,300 Roundtrip, found 18 hours ago
₩387,300
Roundtrip
found 18 hours ago
Select Alaska Airlines flight, departing Thu, May 7 from Seattle to Denver, returning Mon, May 25, priced at ₩387,300 found 18 hours ago
Alaska Airlines
Thu, May 28 - Sat, Jun 13
SEA
Seattle
DEN
Denver
₩400,900 Roundtrip, found 18 hours ago
₩400,900
Roundtrip
found 18 hours ago
Select Alaska Airlines flight, departing Thu, May 28 from Seattle to Denver, returning Sat, Jun 13, priced at ₩400,900 found 18 hours ago
United
Sat, May 23 - Sat, May 30
SEA
Seattle
DEN
Denver
₩410,000 Roundtrip, found 17 hours ago
₩410,000
Roundtrip
found 17 hours ago
Select United flight, departing Sat, May 23 from Seattle to Denver, returning Sat, May 30, priced at ₩410,000 found 17 hours ago
American Airlines
Fri, May 1 - Thu, May 7
SEA
Seattle
DEN
Denver
₩435,000 Roundtrip, found 4 days ago
₩435,000
Roundtrip
found 4 days ago
Select American Airlines flight, departing Fri, May 1 from Seattle to Denver, returning Thu, May 7, priced at ₩435,000 found 4 days ago

Alternative airports near Denver

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city center is 32 minutes. Flights from ₩402,400
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from ₩402,400

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

January is typically the cheapest month to fly

From ₩79,034 - ₩215,425 per traveler.

Frequently asked questions

How much is a flight from SEA to Denver Airport?
If you're traveling between SEA and Denver Intl. Airport (DEN), round-trip journeys start from ₩327,000. 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 kilometers. 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.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Denver Intl.
Roundtrip price
₩327,000
Distance
1635 km
Average flight time
3 hours 42 mins

Explore a world of travel with Expedia

Seattle nearby Airports

Seattle Paine Field Intl. Airport

*Available to Expedia members.