What airlines fly to Colorado?

Korean Air, Delta and United Airlines are the top three most popular airlines that fly to Colorado from Seoul according to our data. Korean Air is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Colorado. Keep in mind that there are 5 different airlines that fly to Colorado on a routine basis, so you have a few additional options to choose from.

How long is the flight from Seoul to Colorado?

Flight times from Seoul to Colorado vary, but if you’re flying out of Incheon and flying into Denver (one of the most popular routes), then the duration is 16h 55m on average. Another popular route from Seoul to Colorado is flying from Seoul to Denver, which will take roughly 24h 37m. Keep in mind that layovers or delays could extend your travel time.

What is the cheapest airline that flies from Seoul to Colorado?

Alaska Airlines, Japan Airlines, and United Airlines are the most popular carriers operating from Seoul to Colorado

When did momondo last update prices for flights from Seoul to Colorado?

Prices for flights from Seoul to Colorado were last updated today.

How many operators does momondo search for flights from Seoul to Colorado?

There are 5 operators available for flights from Seoul to Colorado as of March 2026.

How old do you have to be to fly from Seoul to Colorado?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seoul to Colorado.

What documentation or ID do you need to fly to Colorado?

The necessary travel and health documents for your Colorado trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$416 Cheap Flights from Seoul to Colorado in 2026

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Find the cheapest flights from Seoul to Colorado

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:40 pm - 11:15 pm

ICN

DEN

25h 35m

1 stop

6:00 am - 5:00 am

DEN

ICN

32h 00m

1 stop

$717Asiana Airlines

Do, Jun 4 - Mo, Sep 7

8:50 pm - 10:57 pm

ICN

DEN

17h 07m

1 stop

8:50 pm - 4:55 am

DEN

ICN

17h 05m

1 stop

$732Asiana Airlines

Fr, Mai 8 - Di, Mai 12

7:35 pm - 11:59 pm

ICN

DEN

19h 24m

1 stop

6:00 am - 5:30 pm

DEN

ICN

20h 30m

1 stop

$772Alaska Airlines

Do, Mai 7 - Mo, Mai 11

7:35 pm - 12:06 pm

ICN

DEN

31h 31m

2 stops

8:00 am - 5:30 pm

DEN

ICN

18h 30m

1 stop

$777Alaska Airlines

Do, Mai 7 - Mo, Mai 11

7:35 pm - 11:59 pm

ICN

DEN

19h 24m

1 stop

6:00 am - 5:30 pm

DEN

ICN

20h 30m

1 stop

$797Alaska Airlines

Fr, Mai 8 - Mo, Mai 11

7:00 pm - 11:15 am

ICN

COS

31h 15m

2 stops

5:55 pm - 3:20 pm

COS

ICN

30h 25m

1 stop

$1,039Delta

So, Mai 24 - Mi, Aug 12

7:20 pm - 10:22 pm

ICN

COS

18h 02m

1 stop

5:55 pm - 3:20 pm

COS

ICN

30h 25m

1 stop

$1,087Delta

So, Mai 24 - Mi, Aug 12

8:00 am - 5:02 pm

GMP

DEN

24h 02m

2 stops

6:08 pm - 5:55 pm

DEN

GMP

32h 47m

2 stops

$1,315Japan Airlines

Di, Jun 2 - So, Jun 7

8:00 am - 5:37 pm

GMP

DEN

24h 37m

2 stops

6:08 pm - 5:55 pm

DEN

GMP

32h 47m

2 stops

$1,316Japan Airlines

Di, Jun 2 - Mo, Jun 8

7:55 pm - 6:00 pm

GMP

DEN

37h 05m

2 stops

1:26 pm - 11:05 am

DEN

GMP

30h 39m

2 stops

$1,353ANA

Di, Jul 14 - Mo, Jul 20

Asiana Airlines flights from Seoul to Colorado

Our best Asiana Airlines deals on Seoul to Colorado flight tickets

Asiana Airlines

Jun 4

ICN12:40 pmIncheon Intl

25h 35m

1 stop

DEN11:15 pmDenver Intl

Sep 7

DEN6:00 amDenver Intl

32h 00m

1 stop

ICN5:00 amIncheon Intl

$717

Asiana Airlines

May 8

ICN8:50 pmIncheon Intl

17h 07m

1 stop

DEN10:57 pmDenver Intl

May 12

DEN8:50 pmDenver Intl

17h 05m

1 stop

ICN4:55 amIncheon Intl

$732

Asiana Airlines

May 24

ICN8:50 pmIncheon Intl

16h 54m

1 stop

DEN10:44 pmDenver Intl

Jul 30

DEN6:04 amDenver Intl

18h 16m

1 stop

ICN3:20 pmIncheon Intl

$830

Alaska Airlines flights from Seoul to Colorado

Our best Alaska Airlines deals on Seoul to Colorado flight tickets

Alaska Airlines

May 7

ICN7:35 pmIncheon Intl

19h 24m

1 stop

DEN11:59 pmDenver Intl

May 11

DEN6:00 amDenver Intl

20h 30m

1 stop

ICN5:30 pmIncheon Intl

$772

Alaska Airlines

May 7

ICN7:35 pmIncheon Intl

31h 31m

2 stops

DEN12:06 pmDenver Intl

May 11

DEN8:00 amDenver Intl

18h 30m

1 stop

ICN5:30 pmIncheon Intl

$777

Alaska Airlines

May 8

ICN7:35 pmIncheon Intl

19h 24m

1 stop

DEN11:59 pmDenver Intl

May 11

DEN6:00 amDenver Intl

20h 30m

1 stop

ICN5:30 pmIncheon Intl

$797

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Do 6/4

12:40 pm-11:15 pm

1 stop25h 35m

Denver Intl

Mo 9/7

6:00 am-5:00 am

1 stop32h 00m

$717

Quickest round-trip

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Fr 5/8

8:50 pm-10:57 pm

1 stop17h 07m

Denver Intl

Di 5/12

8:50 pm-4:55 am

1 stop17h 05m

$732

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Do 5/7

7:35 pm-11:59 pm

1 stop19h 24m

Denver Intl

Mo 5/11

6:00 am-5:30 pm

1 stop20h 30m

$772

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Do 5/7

7:35 pm-12:06 pm

2 stops31h 31m

Denver Intl

Mo 5/11

8:00 am-5:30 pm

1 stop18h 30m

$777

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Fr 5/8

7:35 pm-11:59 pm

1 stop19h 24m

Denver Intl

Mo 5/11

6:00 am-5:30 pm

1 stop20h 30m

$797

IncheonColorado Springs

ICN - COS

ICNCOS

Incheon Intl

So 5/24

7:00 pm-11:15 am

2 stops31h 15m

Colorado Springs

Mi 8/12

5:55 pm-3:20 pm

1 stop30h 25m

$1,039

IncheonColorado Springs

ICN - COS

ICNCOS

Incheon Intl

So 5/24

7:20 pm-10:22 pm

1 stop18h 02m

Colorado Springs

Mi 8/12

5:55 pm-3:20 pm

1 stop30h 25m

$1,087

SeoulDenver

GMP - DEN

GMPDEN

Seoul Gimpo Intl

Di 6/2

8:00 am-5:02 pm

2 stops24h 02m

Denver Intl

So 6/7

6:08 pm-5:55 pm

2 stops32h 47m

$1,315

SeoulDenver

GMP - DEN

GMPDEN

Seoul Gimpo Intl

Di 6/2

8:00 am-5:37 pm

2 stops24h 37m

Denver Intl

Mo 6/8

6:08 pm-5:55 pm

2 stops32h 47m

$1,316

SeoulDenver

GMP - DEN

GMPDEN

Seoul Gimpo Intl

Di 7/14

7:55 pm-6:00 pm

2 stops37h 05m

Denver Intl

Mo 7/20

1:26 pm-11:05 am

2 stops30h 39m

$1,353

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Seoul to Colorado

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Colorado?

The month of April is, on average, the cheapest month to fly to Colorado from Seoul, with most prices found around $636. The month of December is another great option to travel to Colorado, with average flight prices from Seoul averaging around $692.

How far in advance should I book a flight to Colorado?

You are more likely to see cheaper flights to Colorado from Seoul when booking weeks ahead of your departure date. In general, you can expect to find flights to Colorado for around $866 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Colorado from Seoul for as low as $669 on momondo.

Can stopping save me money on Seoul to Colorado flights?

You could potentially save up to 51% on your flight if you consider stops on a Seoul to Colorado flight.

Cheap Seoul to Colorado flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seoul to Colorado

Fastest flight time	16h 41m
Direct flights	None

The fastest flight from Seoul to Colorado takes 16h 41m

There are no direct flights from Seoul to Colorado. There are no popular flight routes from Seoul to Colorado.

Search flight deals

When did momondo last update prices for flights from Seoul to Colorado?
Prices for flights from Seoul to Colorado were last updated today.
How many operators does momondo search for flights from Seoul to Colorado?
There are 5 operators available for flights from Seoul to Colorado as of March 2026.
How old do you have to be to fly from Seoul to Colorado?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seoul to Colorado.
What documentation or ID do you need to fly to Colorado?
The necessary travel and health documents for your Colorado trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Seoul to Colorado

Compare and see reviews for airlines that fly from Seoul to Colorado with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $589	Free Cancellation	Rating 7.4 9,467 reviews	Search United Airlines flights
Delta	PriceFrom $620	Free Cancellation	Rating 7.9 8,318 reviews	Search Delta flights
Air Canada	PriceFrom $686	Free Cancellation	Rating 7.1 10,835 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $688	Free Cancellation	Rating 8.1 506 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $695	Free Cancellation	Rating 8.4 1,202 reviews	Search Korean Air flights

Why use momondo?

Why should I use momondo to find a flight deal from Seoul to Colorado?

Finding the right flight to Colorado from Seoul is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Colorado quick and easy, saving you time and money.

Can I find flights from Seoul to Colorado with flexible booking policies on momondo?

momondo does allow users to show only those flights to Colorado from Seoul which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Seoul to Colorado?

momondo provides multiple filters to help you find the best flight to Colorado from Seoul. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Seoul to Colorado right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Seoul to Colorado flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.