₩107,800 Cheap Flights from Seattle (SEA) to Denver (DEN)

View ₩107,800 flight on Tue, Sep 9, 2025Opens in a new window

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

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Cheap Flights from Seattle to Denver (SEA-DEN)

Prices were available within the past 7 days and start at ₩107,800 for one-way flights and ₩215,100 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Sat, Nov 8 - Tue, Nov 18
SEA
Seattle
DEN
Denver
₩215,100 Roundtrip, found 4 days ago
₩215,100
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Sat, Nov 8 from Seattle to Denver, returning Tue, Nov 18, priced at ₩215,100 found 4 days ago
Delta
Sat, Nov 8 - Tue, Nov 11
SEA
Seattle
DEN
Denver
₩215,500 Roundtrip, found 4 days ago
₩215,500
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Nov 8 from Seattle to Denver, returning Tue, Nov 11, priced at ₩215,500 found 4 days ago
Delta
Sat, Oct 4 - Sat, Oct 11
SEA
Seattle
DEN
Denver
₩217,700 Roundtrip, found 3 days ago
₩217,700
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Oct 4 from Seattle to Denver, returning Sat, Oct 11, priced at ₩217,700 found 3 days ago
Delta
Sat, Sep 13 - Sat, Sep 20
SEA
Seattle
DEN
Denver
₩218,100 Roundtrip, found 2 days ago
₩218,100
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Sep 13 from Seattle to Denver, returning Sat, Sep 20, priced at ₩218,100 found 2 days ago
Delta
Sat, Oct 18 - Sat, Oct 25
SEA
Seattle
DEN
Denver
₩218,300 Roundtrip, found 14 hours ago
₩218,300
Roundtrip
found 14 hours ago
Select Delta flight, departing Sat, Oct 18 from Seattle to Denver, returning Sat, Oct 25, priced at ₩218,300 found 14 hours ago
Hawaiian Airlines
Thu, Nov 6 - Tue, Nov 18
SEA
Seattle
DEN
Denver
₩226,100 Roundtrip, found 4 days ago
₩226,100
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Thu, Nov 6 from Seattle to Denver, returning Tue, Nov 18, priced at ₩226,100 found 4 days ago
Delta
Sat, Nov 8 - Mon, Nov 17
SEA
Seattle
DEN
Denver
₩226,500 Roundtrip, found 4 days ago
₩226,500
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Nov 8 from Seattle to Denver, returning Mon, Nov 17, priced at ₩226,500 found 4 days ago
Delta
Sat, Nov 1 - Thu, Nov 6
SEA
Seattle
DEN
Denver
₩228,700 Roundtrip, found 3 days ago
₩228,700
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Nov 1 from Seattle to Denver, returning Thu, Nov 6, priced at ₩228,700 found 3 days ago
Hawaiian Airlines
Thu, Nov 6 - Thu, Nov 13
SEA
Seattle
DEN
Denver
₩237,000 Roundtrip, found 4 days ago
₩237,000
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Thu, Nov 6 from Seattle to Denver, returning Thu, Nov 13, priced at ₩237,000 found 4 days ago
American Airlines
Sat, Sep 13 - Sat, Sep 20
SEA
Seattle
DEN
Denver
₩370,100 Roundtrip, found 2 days ago
₩370,100
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Sep 13 from Seattle to Denver, returning Sat, Sep 20, priced at ₩370,100 found 2 days ago

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

January is typically the cheapest month to fly

From ₩90,259 - ₩357,146 per traveler.

Graph displaying average flight prices per month

Flights from Seattle (SEA) to Denver (DEN)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Denver Intl.
Roundtrip price
₩207,400
Distance
1635 km
Average flight time
3 hours 39 mins

Seattle to Denver Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Seattle to Denver will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring Denver.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with SEA to DEN flights that won’t make your bank account wince. Ready to temporarily leave behind Seattle for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to DEN with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

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 ₩215,100. 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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Seattle nearby Airports

Seattle Paine Field Intl. Airport

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