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

China Eastern, American Airlines, and Delta are the most popular carriers operating from Colorado to Seoul

How long does it take to fly to Seoul?

If you’re flying from a popular airport in Colorado, such as Denver or Colorado Springs, and flying into Seoul, then you can expect flight times to average 16h 55m and 19h 11m, respectively.

What airlines fly to Seoul?

Air Canada, Asiana Airlines and United Airlines are the top three most popular airlines that fly to Seoul from Colorado according to our data. Air Canada is the first choice among our users, with 49% of people opting to fly with this airline when traveling to Seoul. Keep in mind that there are 8 different airlines that fly to Seoul on a routine basis, so you have a few additional options to choose from.

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

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

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

As of November 2026, there are 8 operators available to choose from for flights from Colorado to Seoul.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to Seoul.

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

The travel and health documents required for your trip to Seoul can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seoul. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$391 Cheap Flights from Colorado to Seoul in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Colorado to Seoul

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:54 pm - 4:50 amDEN Denver Intl-ICN Incheon Intl

22h 56m1 stop Los Angeles

1:20 pm - 3:53 pmICN Incheon Intl-DEN Denver Intl

18h 33m1 stop Los Angeles

$762Multiple Airlines

Wed, Dec 2 - Wed, Dec 9

7:39 am - 9:20 pmDEN Denver Intl-ICN Incheon Intl

21h 41m1 stop San Francisco

7:45 pm - 12:08 amICN Incheon Intl-DEN Denver Intl

20h 23m1 stop San Francisco

$769Multiple Airlines

Mon, Dec 7 - Mon, Dec 14

8:15 am - 5:10 pmDEN Denver Intl-ICN Incheon Intl

16h 55m1 stop Vancouver Intl

6:55 pm - 6:17 pmICN Incheon Intl-DEN Denver Intl

39h 22m1 stop Vancouver Intl

$1,049Air Canada

Fri, Feb 19 - Sun, Feb 28

8:15 am - 5:10 pmDEN Denver Intl-ICN Incheon Intl

16h 55m1 stop Vancouver Intl

6:55 pm - 6:17 pmICN Incheon Intl-DEN Denver Intl

39h 22m1 stop Vancouver Intl

$1,054Air Canada

Mon, Feb 15 - Sun, Feb 28

5:34 am - 4:45 pmCOS Colorado Springs-ICN Incheon Intl

19h 11m1 stop Dallas/Fort Worth

6:50 pm - 11:01 pmICN Incheon Intl-COS Colorado Springs

20h 11m1 stop Dallas/Fort Worth

$1,063American Airlines

Fri, Dec 4 - Fri, Dec 11

5:05 am - 3:45 pmDEN Denver Intl-ICN Incheon Intl

19h 40m1 stop Dallas/Fort Worth

5:50 pm - 10:01 pmICN Incheon Intl-DEN Denver Intl

19h 11m1 stop Dallas/Fort Worth

$1,063American Airlines

Sun, Apr 4 - Fri, Apr 16

8:15 am - 4:10 pmDEN Denver Intl-ICN Incheon Intl

16h 55m1 stop Vancouver Intl

5:45 pm - 12:40 pmICN Incheon Intl-DEN Denver Intl

33h 55m1 stop Vancouver Intl

$1,380Asiana Airlines

Tue, Mar 23 - Thu, Apr 8

8:15 am - 4:10 pmDEN Denver Intl-ICN Incheon Intl

16h 55m1 stop Vancouver Intl

5:45 pm - 12:40 pmICN Incheon Intl-DEN Denver Intl

33h 55m1 stop Vancouver Intl

$1,380Asiana Airlines

Mon, Mar 22 - Thu, Apr 8

6:10 am - 3:50 pmDEN Denver Intl-ICN Incheon Intl

18h 40m1 stop Minneapolis St Paul

7:20 pm - 10:33 pmICN Incheon Intl-DEN Denver Intl

18h 13m1 stop Salt Lake City

$1,508Delta

Thu, Mar 25 - Tue, Apr 6

6:45 am - 5:45 pmDEN Denver Intl-ICN Incheon Intl

20h 00m1 stop Seattle/Tacoma Intl

4:25 pm - 10:17 pmICN Incheon Intl-DEN Denver Intl

20h 52m1 stop Atlanta Hartsfield-Jackson

$1,508Delta

Thu, Mar 25 - Mon, Apr 5

Cheap last minute flights

Enter your travel dates to find the best prices.

10:55 pm - 4:20 pmDEN Denver Intl-ICN Incheon Intl

25h 25m1 stop Los Angeles

8:40 pm - 12:58 amICN Incheon Intl-DEN Denver Intl

44h 18m2 stops Vancouver Intl San Francisco

$1,124Multiple Airlines

Sat, Nov 14 - Tue, Nov 24

10:55 pm - 4:20 pmDEN Denver Intl-ICN Incheon Intl

25h 25m1 stop Los Angeles

1:10 pm - 9:30 amICN Incheon Intl-DEN Denver Intl

36h 20m2 stops Beijing Capital Los Angeles

$1,151Multiple Airlines

Sat, Nov 14 - Mon, Nov 23

6:41 am - 4:45 pmDEN Denver Intl-ICN Incheon Intl

18h 04m1 stop Dallas/Fort Worth

6:50 pm - 8:13 amICN Incheon Intl-DEN Denver Intl

29h 23m1 stop Dallas/Fort Worth

$1,210American Airlines

Thu, Nov 12 - Thu, Nov 26

8:10 am - 4:20 pmDEN Denver Intl-ICN Incheon Intl

16h 10m1 stop Salt Lake City

6:40 pm - 5:10 pmICN Incheon Intl-DEN Denver Intl

14h 30m1 stop Salt Lake City

$2,006Delta

Thu, Nov 12 - Sat, Nov 28

8:10 am - 4:20 pmDEN Denver Intl-ICN Incheon Intl

16h 10m1 stop Salt Lake City

6:40 pm - 5:10 pmICN Incheon Intl-DEN Denver Intl

14h 30m1 stop Salt Lake City

$2,006Delta

Mon, Nov 9 - Sat, Nov 28

7:40 am - 4:15 pmDEN Denver Intl-ICN Incheon Intl

16h 35m1 stop San Francisco

6:00 pm - 2:11 amICN Incheon Intl-DEN Denver Intl

24h 11m1 stop San Francisco

$2,006United Airlines

Wed, Nov 11 - Sun, Nov 29

7:40 am - 4:15 pmDEN Denver Intl-ICN Incheon Intl

16h 35m1 stop San Francisco

6:00 pm - 2:11 amICN Incheon Intl-DEN Denver Intl

24h 11m1 stop San Francisco

$2,006United Airlines

Thu, Nov 12 - Sun, Nov 29

8:15 am - 5:10 pmDEN Denver Intl-ICN Incheon Intl

16h 55m1 stop Vancouver Intl

6:55 pm - 8:37 amICN Incheon Intl-DEN Denver Intl

29h 42m2 stops Vancouver Intl Calgary

$2,068Air Canada

Thu, Nov 12 - Tue, Nov 24

8:15 am - 5:10 pmDEN Denver Intl-ICN Incheon Intl

16h 55m1 stop Vancouver Intl

6:55 pm - 8:37 amICN Incheon Intl-DEN Denver Intl

29h 42m2 stops Vancouver Intl Calgary

$2,068Air Canada

Thu, Nov 12 - Mon, Nov 23

8:15 am - 5:10 pmDEN Denver Intl-ICN Incheon Intl

16h 55m1 stop Vancouver Intl

6:55 pm - 6:13 pmICN Incheon Intl-DEN Denver Intl

15h 18m1 stop Vancouver Intl

$6,448Asiana Airlines

Wed, Nov 11 - Sun, Nov 15

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United Airlines flights from Colorado to Seoul

Our best United Airlines deals on Colorado to Seoul flight tickets

United Airlines

Dec 21

COS8:00 amColorado Springs

29h 40m

2 stops

ICN5:40 amIncheon Intl

Dec 28

ICN12:45 pmIncheon Intl

24h 02m

2 stops

COS8:47 pmColorado Springs

$2,228

United Airlines

Dec 22

ASE6:23 pmAspen Pitkin County

29h 52m

2 stops

ICN4:15 pmIncheon Intl

Jan 3

ICN6:30 pmIncheon Intl

31h 24m

2 stops

ASE9:54 amAspen Pitkin County

$2,429

Qatar Airways flights from Colorado to Seoul

Our best Qatar Airways deals on Colorado to Seoul flight tickets

Qatar Airways

Mar 2

COS1:04 pmColorado Springs

36h 11m

2 stops

ICN5:15 pmIncheon Intl

May 3

ICN1:20 amIncheon Intl

50h 25m

2 stops

COS12:45 pmColorado Springs

$1,339

Qatar Airways

Feb 26

COS10:34 amColorado Springs

38h 41m

2 stops

ICN5:15 pmIncheon Intl

Mar 1

ICN12:20 amIncheon Intl

34h 15m

2 stops

COS6:35 pmColorado Springs

$1,752

Qatar Airways

Feb 26

COS10:34 amColorado Springs

38h 41m

2 stops

ICN5:15 pmIncheon Intl

Mar 1

ICN12:20 amIncheon Intl

34h 15m

2 stops

COS6:35 pmColorado Springs

$2,134

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Wed 12/2

1:54 pm-4:50 am

1 stop22h 56m

Incheon Intl

Wed 12/9

1:20 pm-3:53 pm

1 stop18h 33m

$762

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Mon 12/7

7:39 am-9:20 pm

1 stop21h 41m

Incheon Intl

Mon 12/14

7:45 pm-12:08 am

1 stop20h 23m

$769

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Fri 2/19

8:15 am-5:10 pm

1 stop16h 55m

Incheon Intl

Sun 2/28

6:55 pm-6:17 pm

1 stop39h 22m

$1,049

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Mon 2/15

8:15 am-5:10 pm

1 stop16h 55m

Incheon Intl

Sun 2/28

6:55 pm-6:17 pm

1 stop39h 22m

$1,054

Colorado SpringsIncheon

COS Colorado Springs - ICN Incheon Intl

COSICN

Colorado Springs

Fri 12/4

5:34 am-4:45 pm

1 stop19h 11m

Incheon Intl

Fri 12/11

6:50 pm-11:01 pm

1 stop20h 11m

$1,063

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Sun 4/4

5:05 am-3:45 pm

1 stop19h 40m

Incheon Intl

Fri 4/16

5:50 pm-10:01 pm

1 stop19h 11m

$1,063

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Tue 3/23

8:15 am-4:10 pm

1 stop16h 55m

Incheon Intl

Thu 4/8

5:45 pm-12:40 pm

1 stop33h 55m

$1,380

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Mon 3/22

8:15 am-4:10 pm

1 stop16h 55m

Incheon Intl

Thu 4/8

5:45 pm-12:40 pm

1 stop33h 55m

$1,380

Quickest round-trip

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Thu 3/25

6:10 am-3:50 pm

1 stop18h 40m

Incheon Intl

Tue 4/6

7:20 pm-10:33 pm

1 stop18h 13m

$1,508

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Thu 3/25

6:45 am-5:45 pm

1 stop20h 00m

Incheon Intl

Mon 4/5

4:25 pm-10:17 pm

1 stop20h 52m

$1,508

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 Colorado to Seoul

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 Seoul?

The month of April is another great option to travel to Seoul, with average flight prices from Colorado averaging around $1,165.

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

You are more likely to see cheaper flights to Seoul from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Seoul for around $1,342 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seoul from Colorado for as low as $1,117 on momondo.

Can stopping save me money on Colorado to Seoul flights?

You could potentially save up to 2% on your flight if you consider stops on a Colorado to Seoul flight.

Cheap Colorado to Seoul flight deals and tips

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

Best Price Found	$391
Fastest flight time	16h 55m
Direct flights	None

The best one-way flight to Seoul from Colorado in the past 72 hours is $391. The best round-trip flight deal from Colorado to Seoul found on momondo in the last 72 hours is $762.

The fastest flight from Colorado to Seoul takes 16h 55m

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

Search flight deals

Frequently asked questions about flying from Colorado to Seoul

When did momondo last update prices for flights from Colorado to Seoul?
Prices for flights from Colorado to Seoul were last updated today.
How many operators does momondo search for flights from Colorado to Seoul?
As of November 2026, there are 8 operators available to choose from for flights from Colorado to Seoul.
How old do you have to be to fly from Colorado to Seoul?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to Seoul.
What documentation or ID do you need to fly to Seoul?
The travel and health documents required for your trip to Seoul can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seoul. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Colorado to Seoul

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $83	Free Cancellation	Rating 5.5 2,507 reviews	Search Frontier flights
United Airlines	PriceFrom $428	Free Cancellation	Rating 7.3 10,472 reviews	Search United Airlines flights
Delta	PriceFrom $483	Free Cancellation	Rating 7.8 8,699 reviews	Search Delta flights
Korean Air	PriceFrom $519	Free Cancellation	Rating 8.4 1,218 reviews	Search Korean Air flights
American Airlines	PriceFrom $816	Free Cancellation	Rating 7.0 12,227 reviews	Search American Airlines flights
Air Canada	PriceFrom $843	Free Cancellation	Rating 7.1 11,875 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $999	Free Cancellation	Rating 8.1 570 reviews	Search Asiana Airlines flights
WestJet	PriceFrom $1,157	Free Cancellation	Rating 7.2 3,436 reviews	Search WestJet flights

Why use momondo?

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

Finding the right flight to Seoul from Colorado 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 Seoul quick and easy, saving you time and money.

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

All flight searches from Colorado to Seoul on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seoul from Colorado.

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

If you are not ready to book a flight from Colorado to Seoul now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seoul and let you know when they change.

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Cheap flights from Colorado to Seoul from $391

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Seoul departing on 3/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from Colorado to Seoul

Our best United Airlines deals on Colorado to Seoul flight tickets

Qatar Airways flights from Colorado to Seoul

Our best Qatar Airways deals on Colorado to Seoul flight tickets

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Use the filters below to find and compare flights from Colorado to Seoul that are best for you.

See travel insights to Seoul from

How to get the cheapest flight ticket from Colorado to Seoul

What is the cheapest month to fly to Seoul?

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

Can stopping save me money on Colorado to Seoul flights?

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

What airlines fly to Seoul?

How long does it take to fly to Seoul?

Cheap Colorado to Seoul flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Colorado to Seoul

Best airlines flying from Colorado to Seoul

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

Why use momondo?

An easier way to manage your Seoul trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to South Korea

Fly into one of these airports located in Seoul

Airports listed have a maximum distance of 30.3 mi from Seoul

Fly your favorite airline to Seoul

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Seoul

List of cabin classes available on flights landing in Seoul. Availability may vary depending on flight origin and airline.

Popular cities in South Korea

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Colorado

According to popular flight searches on momondo this year

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