Cheap Flights from Seattle (SEA) to Denver (DEN) from HK$1,175~

View HK$1,175 flight on Wed, 13 Aug 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at HK$1,175 for one-way flights and HK$2,339 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 13 Aug - Tue, 19 Aug
SEA
Seattle
DEN
Denver
HK$2,339 Return, found 5 days ago
HK$2,339
Return
found 5 days ago
Select Delta flight, departing Wed, 13 Aug from Seattle to Denver, returning Tue, 19 Aug, priced at HK$2,339 found 5 days ago
Delta
Wed, 13 Aug - Tue, 19 Aug
SEA
Seattle
DEN
Denver
HK$2,577 Return, found 5 days ago
HK$2,577
Return
found 5 days ago
Select Delta flight, departing Wed, 13 Aug from Seattle to Denver, returning Tue, 19 Aug, priced at HK$2,577 found 5 days ago
Delta
Wed, 13 Aug - Tue, 19 Aug
SEA
Seattle
DEN
Denver
HK$2,662 Return, found 5 days ago
HK$2,662
Return
found 5 days ago
Select Delta flight, departing Wed, 13 Aug from Seattle to Denver, returning Tue, 19 Aug, priced at HK$2,662 found 5 days ago
Delta
Wed, 13 Aug - Tue, 19 Aug
SEA
Seattle
DEN
Denver
HK$2,804 Return, found 5 days ago
HK$2,804
Return
found 5 days ago
Select Delta flight, departing Wed, 13 Aug from Seattle to Denver, returning Tue, 19 Aug, priced at HK$2,804 found 5 days ago
Delta
Wed, 13 Aug - Tue, 19 Aug
SEA
Seattle
DEN
Denver
HK$2,889 Return, found 5 days ago
HK$2,889
Return
found 5 days ago
Select Delta flight, departing Wed, 13 Aug from Seattle to Denver, returning Tue, 19 Aug, priced at HK$2,889 found 5 days ago
United
Wed, 13 Aug - Tue, 19 Aug
SEA
Seattle
DEN
Denver
HK$2,962 Return, found 5 days ago
HK$2,962
Return
found 5 days ago
Select United flight, departing Wed, 13 Aug from Seattle to Denver, returning Tue, 19 Aug, priced at HK$2,962 found 5 days ago
United
Wed, 13 Aug - Tue, 19 Aug
SEA
Seattle
DEN
Denver
HK$2,973 Return, found 5 days ago
HK$2,973
Return
found 5 days ago
Select United flight, departing Wed, 13 Aug from Seattle to Denver, returning Tue, 19 Aug, priced at HK$2,973 found 5 days ago
Delta
Wed, 13 Aug - Tue, 19 Aug
SEA
Seattle
DEN
Denver
HK$2,974 Return, found 5 days ago
HK$2,974
Return
found 5 days ago
Select Delta flight, departing Wed, 13 Aug from Seattle to Denver, returning Tue, 19 Aug, priced at HK$2,974 found 5 days ago
United
Wed, 13 Aug - Tue, 19 Aug
SEA
Seattle
DEN
Denver
HK$2,975 Return, found 5 days ago
HK$2,975
Return
found 5 days ago
Select United flight, departing Wed, 13 Aug from Seattle to Denver, returning Tue, 19 Aug, priced at HK$2,975 found 5 days ago
American Airlines
Wed, 13 Aug - Tue, 19 Aug
SEA
Seattle
DEN
Denver
HK$4,374 Return, found 5 days ago
HK$4,374
Return
found 5 days ago
Select American Airlines flight, departing Wed, 13 Aug from Seattle to Denver, returning Tue, 19 Aug, priced at HK$4,374 found 5 days ago

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

January is typically the cheapest month to fly

From HK$510 - HK$2,012 per traveller.

Graph displaying average flight prices per month

Seattle to Denver route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Denver Intl.
Return price
HK$2,339
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$1,175 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$2,339. 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.

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