$419 Cheap Flights from Seoul (ICN) to Denver (DEN)

View $419 flight on Thu, May 28, 2026Opens in a new window

Popular airlines from Incheon Intl. Airport (ICN) to Denver Intl. Airport (DEN)

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Cheap Flights from Seoul to Denver (ICN-DEN)

Prices were available within the past 7 days and start at $419 for one-way flights and $611 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu, Jan 29 - Wed, Feb 4
ICN
Seoul
DEN
Denver
$611 Roundtrip, found 4 days ago
$611
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Thu, Jan 29 from Seoul to Denver, returning Wed, Feb 4, priced at $611 found 4 days ago
Hawaiian Airlines
Fri, Dec 26 - Wed, Jan 7
ICN
Seoul
DEN
Denver
$614 Roundtrip, found 3 days ago
$614
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Fri, Dec 26 from Seoul to Denver, returning Wed, Jan 7, priced at $614 found 3 days ago
Alaska Airlines
Sun, Dec 21 - Sun, Jan 11
ICN
Seoul
DEN
Denver
$615 Roundtrip, found 1 hour ago
$615
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Sun, Dec 21 from Seoul to Denver, returning Sun, Jan 11, priced at $615 found 1 hour ago
Alaska Airlines
Thu, Jan 29 - Wed, Feb 4
ICN
Seoul
DEN
Denver
$619 Roundtrip, found 4 days ago
$619
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Thu, Jan 29 from Seoul to Denver, returning Wed, Feb 4, priced at $619 found 4 days ago
Alaska Airlines
Fri, Apr 24 - Tue, Apr 28
ICN
Seoul
DEN
Denver
$623 Roundtrip, found 9 hours ago
$623
Roundtrip
found 9 hours ago
Select Alaska Airlines flight, departing Fri, Apr 24 from Seoul to Denver, returning Tue, Apr 28, priced at $623 found 9 hours ago
American Airlines
Mon, Nov 24 - Fri, Nov 28
ICN
Seoul
DEN
Denver
$624 Roundtrip, found 4 days ago
$624
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Nov 24 from Seoul to Denver, returning Fri, Nov 28, priced at $624 found 4 days ago
American Airlines
Mon, Nov 10 - Tue, Nov 18
ICN
Seoul
DEN
Denver
$626 Roundtrip, found 2 days ago
$626
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Nov 10 from Seoul to Denver, returning Tue, Nov 18, priced at $626 found 2 days ago
Delta
Wed, Apr 8 - Thu, Apr 30
ICN
Seoul
DEN
Denver
$626 Roundtrip, found 4 days ago
$626
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Apr 8 from Seoul to Denver, returning Thu, Apr 30, priced at $626 found 4 days ago
American Airlines
Thu, Dec 11 - Tue, Dec 30
ICN
Seoul
DEN
Denver
$627 Roundtrip, found 2 hours ago
$627
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Thu, Dec 11 from Seoul to Denver, returning Tue, Dec 30, priced at $627 found 2 hours ago
United
Wed, Apr 8 - Thu, Apr 30
ICN
Seoul
DEN
Denver
$652 Roundtrip, found 4 days ago
$652
Roundtrip
found 4 days ago
Select United flight, departing Wed, Apr 8 from Seoul to Denver, returning Thu, Apr 30, priced at $652 found 4 days ago

Find the cheapest month to fly from Seoul (ICN) to Denver (DEN)

November is typically the cheapest month to fly

From $631 - $1,134 per traveler.

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 $905
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $905

Frequently asked questions

How much does a flight from Incheon Intl. Airport (ICN) to Denver Intl. Airport (DEN) cost?
Secure a cheap one-way flight from $419 or cheap return flight from $611 from Incheon Intl. Airport (ICN) to Denver Intl. Airport (DEN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Incheon Intl. Airport (ICN) to Denver Intl. Airport (DEN)?
Traveling in January may help you find better deals, as it's the cheapest month for flights between ICN and DEN. You'll often find the lowest fares during the off-season.
What is the cheapest airline that flies from Incheon Intl. Airport (ICN) to Denver Intl. Airport (DEN)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest ICN to DEN flight.
How many flights per day from Incheon Intl. Airport (ICN) to Denver Intl. Airport (DEN)?
You'll have to catch a flight with a layover if you're traveling from Incheon Intl. Airport (ICN) to Denver Intl. Airport (DEN). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from ICN to DEN?
Usually you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can change based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Incheon Intl. Airport (ICN) to Denver Intl. Airport (DEN)?
To avoid potential delays on the Incheon Intl. Airport (ICN) to Denver Intl. Airport (DEN) route, aim to travel before 3 PM. Later departures have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Incheon Intl. Airport (ICN) to Denver Intl. Airport (DEN) last-minute?
Waiting until right before your break to book your flight from ICN to DEN generally means paying more. While you may come across some last-minute deals, they're not always guaranteed. Be flexible with your travel plans for a better chance of snagging a bargain.
Is it cheaper to book an ICN to DEN flight and hotel package?
Securing an ICN to DEN flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Select from our extensive range of stays and then add car rentals, flights and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Incheon Intl. Airport (ICN) to Denver Intl. Airport (DEN)?
In most instances, you're able to reschedule or cancel your ICN to DEN flight. However, there may be additional fees, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you need more information, visit our Customer Service portal.

Travel information

Origin airport
Incheon Intl.
Destination airport
Denver Intl.
Airlines serving
Air Canada, Air China, Alaska Airlines, All Nippon Airways, American Airlines, Asiana Airlines, China Airlines, Delta, Hawaiian Airlines, Japan Airlines, Korean Air, Singapore Airlines, Turkish Airlines, United, WestJet
Roundtrip price
$611
Distance
6189 mi

Book with confidence

Seoul to Denver Flights

The cheapest times to fly from Seoul to Denver

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seoul to Denver are during the month of January. You can find some of the cheapest flights from Seoul to Denver with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seoul to Denver

Sunday is one of the best days to book for cheap flights from Seoul to Denver: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seoul to Denver

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seoul to Denver in 2025. You can also book with separate airlines for your outbound and return journeys, from $419 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seoul to Denver flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seoul to Denver airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seoul to Denver Flights

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*Available to One Key members.