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

WestJet, Air China, and Japan Airlines are the most popular carriers operating from Colorado to Seoul

What airlines fly to Seoul?

Air Canada, Korean Air and Asiana 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 48% of people opting to fly with this airline when traveling to Seoul. Keep in mind that there are 10 different airlines that fly to Seoul on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Seoul?

If you’re flying from a popular airport in Colorado, such as Colorado Springs or Denver, and flying into Seoul, then you can expect flight times to average 16h 21m and 18h 25m, respectively.

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 December 2025, there are 10 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.

$442 Cheap Flights from Colorado to Seoul in 2025/26

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One-way

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Cheap round-trip flights

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7:59 pm - 6:35 pm

DEN

ICN

30h 36m2 stops

6:55 pm - 10:02 am

ICN

DEN

31h 07m1 stop

$757Multiple Airlines

Sat, Feb 7 - Fri, Feb 20

9:00 pm - 6:35 pm

DEN

ICN

29h 35m2 stops

6:55 pm - 10:02 am

ICN

DEN

31h 07m1 stop

$769Multiple Airlines

Thu, Feb 5 - Fri, Feb 20

7:59 pm - 6:35 pm

DEN

ICN

30h 36m2 stops

6:55 pm - 10:02 am

ICN

DEN

31h 07m1 stop

$787Multiple Airlines

Sat, Feb 7 - Sat, Feb 21

3:06 pm - 6:35 pm

DEN

ICN

35h 29m2 stops

6:55 pm - 10:02 am

ICN

DEN

31h 07m1 stop

$793Multiple Airlines

Fri, Feb 6 - Fri, Feb 20

11:43 am - 5:40 am

COS

ICN

25h 57m2 stops

6:00 pm - 10:06 pm

ICN

COS

20h 06m2 stops

$920United Airlines

Fri, Jan 23 - Tue, Jan 27

7:59 am - 4:20 pm

COS

ICN

16h 21m1 stop

8:05 pm - 11:14 am

ICN

COS

30h 09m2 stops

$932Delta

Sat, Feb 28 - Sat, Mar 21

3:40 pm - 4:15 pm

COS

ICN

32h 35m2 stops

11:45 am - 8:49 am

ICN

COS

36h 04m2 stops

$1,011United Airlines

Sat, Feb 28 - Sat, Mar 21

5:37 pm - 2:10 pm

DEN

GMP

28h 33m2 stops

2:25 pm - 8:28 am

GMP

DEN

34h 03m2 stops

$1,452Air China

Thu, Jan 29 - Mon, Feb 2

5:33 pm - 1:05 pm

DEN

GMP

27h 32m2 stops

2:25 pm - 8:21 am

GMP

DEN

32h 56m2 stops

$1,457Air China

Mon, Mar 2 - Mon, Mar 9

8:00 am - 3:20 pm

COS

ICN

16h 20m1 stop

7:40 pm - 10:29 pm

ICN

COS

17h 49m1 stop

$1,696Delta

Thu, May 7 - Mon, May 18

United Airlines flights from Colorado to Seoul

Our best United Airlines deals on Colorado to Seoul flight tickets

United Airlines

Jan 23

COS11:43 amColorado Springs

25h 57m

2 stops

ICN5:40 amIncheon Intl

Jan 27

ICN6:00 pmIncheon Intl

20h 06m

2 stops

COS10:06 pmColorado Springs

$920

Find similar

United Airlines

Feb 28

COS3:40 pmColorado Springs

32h 35m

2 stops

ICN4:15 pmIncheon Intl

Mar 21

ICN11:45 amIncheon Intl

36h 04m

2 stops

COS8:49 amColorado Springs

$1,011

Find similar

United Airlines

Jan 26

COS11:43 amColorado Springs

25h 57m

2 stops

ICN5:40 amIncheon Intl

Feb 2

ICN6:00 pmIncheon Intl

16h 18m

2 stops

COS6:18 pmColorado Springs

$1,087

Find similar

Delta flights from Colorado to Seoul

Our best Delta deals on Colorado to Seoul flight tickets

Delta

Feb 28

COS7:59 amColorado Springs

16h 21m

1 stop

ICN4:20 pmIncheon Intl

Mar 21

ICN8:05 pmIncheon Intl

30h 09m

2 stops

COS11:14 amColorado Springs

$932

Find similar

Delta

May 7

COS8:00 amColorado Springs

16h 20m

1 stop

ICN3:20 pmIncheon Intl

May 18

ICN7:40 pmIncheon Intl

17h 49m

1 stop

COS10:29 pmColorado Springs

$1,696

Find similar

Delta

May 7

COS8:00 amColorado Springs

16h 20m

1 stop

ICN3:20 pmIncheon Intl

May 18

ICN7:20 pmIncheon Intl

36h 54m

2 stops

COS5:14 pmColorado Springs

$1,717

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Sat 2/7

7:59 pm-6:35 pm

2 stops30h 36m

Incheon Intl

Fri 2/20

6:55 pm-10:02 am

1 stop31h 07m

$757

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Thu 2/5

9:00 pm-6:35 pm

2 stops29h 35m

Incheon Intl

Fri 2/20

6:55 pm-10:02 am

1 stop31h 07m

$769

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Sat 2/7

7:59 pm-6:35 pm

2 stops30h 36m

Incheon Intl

Sat 2/21

6:55 pm-10:02 am

1 stop31h 07m

$787

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Fri 2/6

3:06 pm-6:35 pm

2 stops35h 29m

Incheon Intl

Fri 2/20

6:55 pm-10:02 am

1 stop31h 07m

$793

Colorado SpringsIncheon

COS - ICN

COSICN

Colorado Springs

Fri 1/23

11:43 am-5:40 am

2 stops25h 57m

Incheon Intl

Tue 1/27

6:00 pm-10:06 pm

2 stops20h 06m

$920

Colorado SpringsIncheon

COS - ICN

COSICN

Colorado Springs

Sat 2/28

7:59 am-4:20 pm

1 stop16h 21m

Incheon Intl

Sat 3/21

8:05 pm-11:14 am

2 stops30h 09m

$932

Colorado SpringsIncheon

COS - ICN

COSICN

Colorado Springs

Sat 2/28

3:40 pm-4:15 pm

2 stops32h 35m

Incheon Intl

Sat 3/21

11:45 am-8:49 am

2 stops36h 04m

$1,011

DenverSeoul

DEN - GMP

DENGMP

Denver Intl

Thu 1/29

5:37 pm-2:10 pm

2 stops28h 33m

Seoul Gimpo Intl

Mon 2/2

2:25 pm-8:28 am

2 stops34h 03m

$1,452

DenverSeoul

DEN - GMP

DENGMP

Denver Intl

Mon 3/2

5:33 pm-1:05 pm

2 stops27h 32m

Seoul Gimpo Intl

Mon 3/9

2:25 pm-8:21 am

2 stops32h 56m

$1,457

Colorado SpringsIncheon

COS - ICN

COSICN

Colorado Springs

Thu 5/7

8:00 am-3:20 pm

1 stop16h 20m

Incheon Intl

Mon 5/18

7:40 pm-10:29 pm

1 stop17h 49m

$1,696

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 February is another great option to travel to Seoul, with average flight prices from Colorado averaging around $1,030.

What is the cheapest day to depart on your flight to Seoul?

According to our data, Wednesday is the cheapest day to fly to Seoul from Colorado. The lowest ticket price found for a Wednesday departure recently was $1,180. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Seoul is Friday, with ticket prices averaging around $1,519.

What is the cheapest time of day to depart on your flight to Seoul?

Flying to Seoul from Colorado in the morning is the least expensive time of day to depart. momondo users have found prices as low as $1,344 when looking at flights departing in the morning. At noon is when there is more demand to fly to Seoul, so prices are often more expensive at around $1,540 per ticket.

How far in advance should I book a flight 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 $1,220 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 $945 on momondo.

Can stopping save me money on Colorado to Seoul flights?

You could potentially save up to 3% 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

Fastest flight time	16h 21m
Direct flights	None

The fastest flight from Colorado to Seoul takes 16h 21m

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

Search flight deals

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 December 2025, there are 10 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 $54	Free Cancellation	Rating 5.8 3,081 reviews	Search Frontier flights
United Airlines	PriceFrom $187	Free Cancellation	Rating 7.4 9,092 reviews	Search United Airlines flights
Delta	PriceFrom $478	Free Cancellation	Rating 7.9 8,006 reviews	Search Delta flights
AIR PREMIA	PriceFrom $585	Free Cancellation	Rating 8.3 72 reviews	Search AIR PREMIA flights
WestJet	PriceFrom $748	Free Cancellation	Rating 7.2 3,201 reviews	Search WestJet flights
Turkish Airlines	PriceFrom $755	Free Cancellation	Rating 7.3 4,099 reviews	Search Turkish Airlines flights
Asiana Airlines	PriceFrom $757	Free Cancellation	Rating 8.2 493 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $838	Free Cancellation	Rating 8.4 1,186 reviews	Search Korean Air flights
American Airlines	PriceFrom $877	Free Cancellation	Rating 7.2 11,052 reviews	Search American Airlines flights
Air Canada	PriceFrom $975	Free Cancellation	Rating 7.1 10,525 reviews	Search Air Canada 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.

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.

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Find better results for your trip to South Korea

Fly into one of these airports located in Seoul

Seoul Gimpo Intl Airport

Incheon Intl Airport

Cheap flights from Colorado to Seoul from $442

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 2/11. 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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Find the cheapest flights from Colorado to Seoul

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United Airlines flights from Colorado to Seoul

Our best United Airlines deals on Colorado to Seoul flight tickets

Delta flights from Colorado to Seoul

Our best Delta 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?

The month of February is another great option to travel to Seoul, with average flight prices from Colorado averaging around $1,030.

What is the cheapest day to depart on your flight to Seoul?

What is the cheapest time of day to depart on your flight to Seoul?

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

Can stopping save me money on Colorado to Seoul flights?

You could potentially save up to 3% on your flight if you consider stops on a Colorado to Seoul flight.

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

WestJet, Air China, and Japan Airlines are the most popular carriers operating from Colorado to Seoul

What airlines fly to Seoul?

How long does it take to fly to Seoul?

If you’re flying from a popular airport in Colorado, such as Colorado Springs or Denver, and flying into Seoul, then you can expect flight times to average 16h 21m and 18h 25m, respectively.

Cheap Colorado to Seoul flight deals and tips

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

Fastest flight time

Direct flights

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

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

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

What documentation or ID do you need to fly 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?

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

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

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

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

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