Cheap Flights from Seattle (SEA) to Denver (DEN) from HK$541~

View HK$541 flight on Mon, 13 Apr 2026Opens in a new window

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

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at HK$541 for one-way flights and HK$1,620 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 4 Feb - Sun, 8 Feb
SEA
Seattle
DEN
Denver
HK$1,620 Return, found 3 days ago
HK$1,620
Return
found 3 days ago
Select Delta flight, departing Wed, 4 Feb from Seattle to Denver, returning Sun, 8 Feb, priced at HK$1,620 found 3 days ago
Delta
Wed, 4 Feb - Sun, 8 Feb
SEA
Seattle
DEN
Denver
HK$1,771 Return, found 3 days ago
HK$1,771
Return
found 3 days ago
Select Delta flight, departing Wed, 4 Feb from Seattle to Denver, returning Sun, 8 Feb, priced at HK$1,771 found 3 days ago
Delta
Wed, 4 Feb - Sun, 8 Feb
SEA
Seattle
DEN
Denver
HK$1,849 Return, found 3 days ago
HK$1,849
Return
found 3 days ago
Select Delta flight, departing Wed, 4 Feb from Seattle to Denver, returning Sun, 8 Feb, priced at HK$1,849 found 3 days ago
Delta
Wed, 4 Feb - Sun, 8 Feb
SEA
Seattle
DEN
Denver
HK$1,943 Return, found 3 days ago
HK$1,943
Return
found 3 days ago
Select Delta flight, departing Wed, 4 Feb from Seattle to Denver, returning Sun, 8 Feb, priced at HK$1,943 found 3 days ago
Delta
Wed, 4 Feb - Sun, 8 Feb
SEA
Seattle
DEN
Denver
HK$2,094 Return, found 3 days ago
HK$2,094
Return
found 3 days ago
Select Delta flight, departing Wed, 4 Feb from Seattle to Denver, returning Sun, 8 Feb, priced at HK$2,094 found 3 days ago
United
Wed, 4 Feb - Sun, 8 Feb
SEA
Seattle
DEN
Denver
HK$2,171 Return, found 3 days ago
HK$2,171
Return
found 3 days ago
Select United flight, departing Wed, 4 Feb from Seattle to Denver, returning Sun, 8 Feb, priced at HK$2,171 found 3 days ago
Delta
Wed, 4 Feb - Sun, 8 Feb
SEA
Seattle
DEN
Denver
HK$2,172 Return, found 3 days ago
HK$2,172
Return
found 3 days ago
Select Delta flight, departing Wed, 4 Feb from Seattle to Denver, returning Sun, 8 Feb, priced at HK$2,172 found 3 days ago
United
Wed, 4 Feb - Sun, 8 Feb
SEA
Seattle
DEN
Denver
HK$2,244 Return, found 3 days ago
HK$2,244
Return
found 3 days ago
Select United flight, departing Wed, 4 Feb from Seattle to Denver, returning Sun, 8 Feb, priced at HK$2,244 found 3 days ago
United
Wed, 4 Feb - Sun, 8 Feb
SEA
Seattle
DEN
Denver
HK$2,472 Return, found 3 days ago
HK$2,472
Return
found 3 days ago
Select United flight, departing Wed, 4 Feb from Seattle to Denver, returning Sun, 8 Feb, priced at HK$2,472 found 3 days ago
American Airlines
Wed, 4 Feb - Sun, 8 Feb
SEA
Seattle
DEN
Denver
HK$2,483 Return, found 3 days ago
HK$2,483
Return
found 3 days ago
Select American Airlines flight, departing Wed, 4 Feb from Seattle to Denver, returning Sun, 8 Feb, priced at HK$2,483 found 3 days ago
Seattle to Denver route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Denver Intl.
Return price
HK$1,620
Distance
1635 km
Average flight time
3 hours 41 mins

Flights from Seattle to Denver

Book cheap flights from Seattle (SEA) to Denver (DEN) on Expedia.com.hk. Find the best flight deals to destinations around the world for your next leisure or business travel on Expedia.com.hk.

Search for flights from Seattle (SEA) to Denver (DEN) to find great flight deals suitable to your travel date and time. Expedia.com.hk flight booking search engine is simple to use and looking for cheap flights is as easy as a click of a mouse or on your mobile devices.

Be assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Seattle (SEA) to Denver (DEN) trip. Call us at 3077-4857 (direct number - 24 hours day for English).

Save more when combine your Denver flight with a hotel for a package deal! Discover additional savings by booking in advance. Now you can find activities in Denver and things to do in Denver for your perfect vacation with Expedia Thing to Do.

If you would like to book flights to Denver more flexibly, many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Denver is HK$541 now!

 

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 HK$1,620. 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.

Explore a world of travel with Expedia

*Available to Expedia members.