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

China Eastern, Philippine Airlines, and Alaska Airlines 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 17h 30m and 18h 15m, respectively.

What airlines fly to Seoul?

Air Canada, Asiana Airlines and Korean Air 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 45% 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.

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 October 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.

$394 Cheap Flights from Colorado to Seoul in 2025/26

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10:51 pm - 11:35 amDEN-ICN

44h 44m2 stops

6:55 pm - 9:57 amICN-DEN

31h 02m1 stop

$763Multiple Airlines

Find Deal

Thu, Jan 15 - Sat, Jan 24

11:10 am - 3:15 pmDEN-ICN

36h 05m2 stops

6:55 pm - 9:57 amICN-DEN

31h 02m1 stop

$789Multiple Airlines

Find Deal

Sat, Jan 17 - Sat, Jan 24

7:05 pm - 4:00 pmDEN-ICN

28h 55m1 stop

6:55 pm - 8:53 amICN-DEN

29h 58m2 stops

$869Air Canada

Find Deal

Mon, Feb 2 - Mon, Feb 23

1:35 pm - 5:40 amCOS-ICN

24h 05m2 stops

12:45 pm - 9:59 pmICN-COS

25h 14m2 stops

$897United Airlines

Find Deal

Fri, Dec 5 - Fri, Dec 12

6:25 am - 11:55 amDEN-ICN

37h 30m2 stops

8:55 am - 6:32 pmICN-DEN

25h 37m2 stops

$902China Eastern

Find Deal

Mon, Dec 8 - Tue, Dec 16

6:25 am - 11:55 amDEN-ICN

37h 30m2 stops

4:10 pm - 6:32 pmICN-DEN

42h 22m2 stops

$918China Eastern

Find Deal

Wed, Dec 3 - Thu, Dec 18

3:40 pm - 5:40 amCOS-ICN

22h 00m2 stops

6:00 pm - 8:02 pmICN-COS

18h 02m2 stops

$1,009United Airlines

Find Deal

Mon, Feb 16 - Fri, Feb 20

5:33 am - 4:45 pmCOS-ICN

19h 12m1 stop

7:15 pm - 8:30 pmICN-COS

17h 15m1 stop

$1,344American Airlines

Find Deal

Fri, Dec 5 - Fri, Dec 12

3:35 pm - 5:10 pmCOS-ICN

33h 35m2 stops

6:55 pm - 9:59 pmICN-COS

19h 04m2 stops

$1,416Air Canada

Find Deal

Fri, Nov 21 - Fri, Nov 28

6:17 am - 4:45 pmCOS-ICN

18h 28m1 stop

6:50 pm - 11:31 pmICN-COS

20h 41m1 stop

$1,504American Airlines

Find Deal

Mon, Feb 16 - Fri, Feb 20

United Airlines flights from Colorado to Seoul

Our best United Airlines deals on Colorado to Seoul flight tickets

United Airlines

Dec 5

COS1:35 pmColorado Springs

24h 05m

2 stops

ICN5:40 amIncheon Intl

Dec 12

ICN12:45 pmIncheon Intl

25h 14m

2 stops

COS9:59 pmColorado Springs

$897

Find similar

United Airlines

Feb 16

COS3:40 pmColorado Springs

22h 00m

2 stops

ICN5:40 amIncheon Intl

Feb 20

ICN6:00 pmIncheon Intl

18h 02m

2 stops

COS8:02 pmColorado Springs

$1,009

Find similar

United Airlines

Dec 3

COS6:00 amColorado Springs

18h 15m

2 stops

ICN4:15 pmIncheon Intl

Dec 30

ICN12:45 pmIncheon Intl

27h 14m

2 stops

COS11:59 pmColorado Springs

$1,229

Find similar

American Airlines flights from Colorado to Seoul

Our best American Airlines deals on Colorado to Seoul flight tickets

American Airlines

Dec 5

COS5:33 amColorado Springs

19h 12m

1 stop

ICN4:45 pmIncheon Intl

Dec 12

ICN7:15 pmIncheon Intl

17h 15m

1 stop

COS8:30 pmColorado Springs

$1,344

Find similar

American Airlines

Feb 16

COS6:17 amColorado Springs

18h 28m

1 stop

ICN4:45 pmIncheon Intl

Feb 20

ICN6:50 pmIncheon Intl

20h 41m

1 stop

COS11:31 pmColorado Springs

$1,504

Find similar

American Airlines

Feb 16

COS6:17 amColorado Springs

18h 28m

1 stop

ICN4:45 pmIncheon Intl

Feb 20

ICN6:50 pmIncheon Intl

32h 40m

2 stops

COS11:30 amColorado Springs

$1,509

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Thu 1/15

10:51 pm-11:35 am

2 stops44h 44m

Incheon Intl

Sat 1/24

6:55 pm-9:57 am

1 stop31h 02m

$763

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Sat 1/17

11:10 am-3:15 pm

2 stops36h 05m

Incheon Intl

Sat 1/24

6:55 pm-9:57 am

1 stop31h 02m

$789

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Mon 2/2

7:05 pm-4:00 pm

1 stop28h 55m

Incheon Intl

Mon 2/23

6:55 pm-8:53 am

2 stops29h 58m

$869

Colorado SpringsIncheon

COS - ICN

COSICN

Colorado Springs

Fri 12/5

1:35 pm-5:40 am

2 stops24h 05m

Incheon Intl

Fri 12/12

12:45 pm-9:59 pm

2 stops25h 14m

$897

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Mon 12/8

6:25 am-11:55 am

2 stops37h 30m

Incheon Intl

Tue 12/16

8:55 am-6:32 pm

2 stops25h 37m

$902

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Wed 12/3

6:25 am-11:55 am

2 stops37h 30m

Incheon Intl

Thu 12/18

4:10 pm-6:32 pm

2 stops42h 22m

$918

Colorado SpringsIncheon

COS - ICN

COSICN

Colorado Springs

Mon 2/16

3:40 pm-5:40 am

2 stops22h 00m

Incheon Intl

Fri 2/20

6:00 pm-8:02 pm

2 stops18h 02m

$1,009

Colorado SpringsIncheon

COS - ICN

COSICN

Colorado Springs

Fri 12/5

5:33 am-4:45 pm

1 stop19h 12m

Incheon Intl

Fri 12/12

7:15 pm-8:30 pm

1 stop17h 15m

$1,344

Colorado SpringsIncheon

COS - ICN

COSICN

Colorado Springs

Fri 11/21

3:35 pm-5:10 pm

2 stops33h 35m

Incheon Intl

Fri 11/28

6:55 pm-9:59 pm

2 stops19h 04m

$1,416

Colorado SpringsIncheon

COS - ICN

COSICN

Colorado Springs

Mon 2/16

6:17 am-4:45 pm

1 stop18h 28m

Incheon Intl

Fri 2/20

6:50 pm-11:31 pm

1 stop20h 41m

$1,504

Flights are sorted by cheapest round-trip flights first.

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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 $1,252 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 $962 on momondo.

Can stopping save me money on Colorado to Seoul flights?

You could potentially save up to 4% 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

Direct flights	None

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 October 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 3,128 reviews	Search Frontier flights
United Airlines	PriceFrom $189	Free Cancellation	Rating 7.4 8,991 reviews	Search United Airlines flights
AIR PREMIA	PriceFrom $585	Free Cancellation	Rating 8.3 65 reviews	Search AIR PREMIA flights
Delta	PriceFrom $587	Free Cancellation	Rating 7.9 7,981 reviews	Search Delta flights
WestJet	PriceFrom $748	Free Cancellation	Rating 7.2 3,133 reviews	Search WestJet flights
Turkish Airlines	PriceFrom $755	Free Cancellation	Rating 7.3 4,022 reviews	Search Turkish Airlines flights
Asiana Airlines	PriceFrom $757	Free Cancellation	Rating 8.2 485 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $843	Free Cancellation	Rating 8.4 1,153 reviews	Search Korean Air flights
Air Canada	PriceFrom $866	Free Cancellation	Rating 7.1 10,346 reviews	Search Air Canada flights
American Airlines	PriceFrom $877	Free Cancellation	Rating 7.2 11,028 reviews	Search American Airlines 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

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Find better results for your trip to South Korea

Fly into one of these airports located in Seoul

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Incheon Intl Airport

Cheap flights from Colorado to Seoul from $394

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 12/7. 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

American Airlines flights from Colorado to Seoul

Our best American Airlines 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.

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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

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 4% on your flight if you consider stops on a Colorado to Seoul flight.

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

China Eastern, Philippine Airlines, and Alaska 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 Denver or Colorado Springs, and flying into Seoul, then you can expect flight times to average 17h 30m and 18h 15m, 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

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