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 55% 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.

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 15h 30m and 16h 10m, respectively.

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

ANA and United Airlines are the most popular carriers operating 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 August 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.

$372 Cheap Flights from Colorado to Seoul in 2026

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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.

12:42 pm - 3:50 pmDEN Denver Intl-ICN Incheon Intl

36h 08m1 stop Los Angeles

1:00 pm - 3:05 pmICN Incheon Intl-DEN Denver Intl

17h 05m1 stop Los Angeles

$846Multiple Airlines

Wed, Sep 16 - Mon, Sep 21

9:47 am - 9:20 pmDEN Denver Intl-ICN Incheon Intl

20h 33m1 stop San Francisco

7:45 pm - 10:59 pmICN Incheon Intl-DEN Denver Intl

19h 14m1 stop San Francisco

$854Multiple Airlines

Mon, Oct 26 - Mon, Nov 16

12:15 pm - 6:45 pmDEN Denver Intl-ICN Incheon Intl

15h 30m1 stop Calgary

8:45 pm - 11:20 amICN Incheon Intl-DEN Denver Intl

29h 35m1 stop Calgary

$886WestJet

Thu, Sep 10 - Sat, Oct 17

12:15 pm - 6:45 pmDEN Denver Intl-ICN Incheon Intl

15h 30m1 stop Calgary

8:45 pm - 11:20 amICN Incheon Intl-DEN Denver Intl

29h 35m1 stop Calgary

$890WestJet

Thu, Sep 10 - Sat, Oct 17

9:10 am - 4:05 pmDEN Denver Intl-ICN Incheon Intl

15h 55m1 stop Vancouver Intl

5:45 pm - 4:58 pmICN Incheon Intl-DEN Denver Intl

38h 13m1 stop Vancouver Intl

$978Air Canada

Wed, Sep 16 - Tue, Sep 22

9:10 am - 4:05 pmDEN Denver Intl-ICN Incheon Intl

15h 55m1 stop Vancouver Intl

5:45 pm - 4:58 pmICN Incheon Intl-DEN Denver Intl

38h 13m1 stop Vancouver Intl

$1,002Air Canada

Thu, Sep 17 - Tue, Sep 22

5:10 pm - 4:40 amCOS Colorado Springs-ICN Incheon Intl

20h 30m2 stops Denver Intl San Francisco

6:00 pm - 8:43 amICN Incheon Intl-COS Colorado Springs

30h 43m2 stops San Francisco Denver Intl

$1,112United Airlines

Mon, Oct 26 - Mon, Nov 23

5:30 am - 3:00 pmCOS Colorado Springs-ICN Incheon Intl

18h 30m2 stops Denver Intl San Francisco

12:45 pm - 8:49 pmICN Incheon Intl-COS Colorado Springs

24h 04m2 stops San Francisco Denver Intl

$1,212United Airlines

Thu, Oct 8 - Thu, Nov 12

8:06 pm - 5:30 pmDEN Denver Intl-ICN Incheon Intl

30h 24m2 stops San Diego Seattle/Tacoma Intl

7:35 pm - 11:32 amICN Incheon Intl-DEN Denver Intl

30h 57m2 stops Seattle/Tacoma Intl San Diego

$1,266Alaska Airlines

Wed, Sep 9 - Mon, Oct 5

7:59 pm - 5:35 pmDEN Denver Intl-ICN Incheon Intl

29h 36m2 stops San Diego Seattle/Tacoma Intl

8:00 pm - 12:59 pmICN Incheon Intl-DEN Denver Intl

32h 59m2 stops Seattle/Tacoma Intl San Diego

$1,266Alaska Airlines

Tue, Nov 3 - Mon, Nov 16

Cheap last minute flights

Enter your travel dates to find the best prices.

12:15 pm - 6:45 pmDEN Denver Intl-ICN Incheon Intl

15h 30m1 stop Calgary

7:20 am - 10:58 pmICN Incheon Intl-DEN Denver Intl

54h 38m2 stops Manila Ninoy Aquino Intl Seattle/Tacoma Intl

$1,105Multiple Airlines

Thu, Aug 13 - Thu, Aug 20

12:15 pm - 6:45 pmDEN Denver Intl-ICN Incheon Intl

15h 30m1 stop Calgary

8:40 pm - 11:20 amICN Incheon Intl-DEN Denver Intl

29h 40m2 stops Vancouver Intl Calgary

$1,138Multiple Airlines

Wed, Aug 12 - Tue, Aug 18

12:15 pm - 6:45 pmDEN Denver Intl-ICN Incheon Intl

15h 30m1 stop Calgary

7:15 pm - 9:16 pmICN Incheon Intl-DEN Denver Intl

17h 01m1 stop San Francisco

$1,158Multiple Airlines

Wed, Aug 12 - Wed, Aug 19

6:00 am - 3:20 pmDEN Denver Intl-ICN Incheon Intl

18h 20m1 stop Los Angeles

12:40 pm - 2:22 pmICN Incheon Intl-DEN Denver Intl

16h 42m1 stop Los Angeles

$1,335Asiana Airlines

Fri, Aug 14 - Mon, Aug 31

5:03 am - 3:45 pmDEN Denver Intl-ICN Incheon Intl

19h 42m1 stop Dallas/Fort Worth

5:50 pm - 11:59 pmICN Incheon Intl-DEN Denver Intl

21h 09m2 stops Dallas/Fort Worth Chicago O'Hare Intl

$1,362American Airlines

Fri, Aug 14 - Mon, Aug 31

6:25 am - 3:45 pmDEN Denver Intl-ICN Incheon Intl

18h 20m1 stop Dallas/Fort Worth

5:50 pm - 11:59 pmICN Incheon Intl-DEN Denver Intl

21h 09m2 stops Dallas/Fort Worth Chicago O'Hare Intl

$1,363American Airlines

Tue, Aug 11 - Mon, Aug 24

6:00 am - 3:20 pmDEN Denver Intl-ICN Incheon Intl

18h 20m1 stop Los Angeles

12:40 pm - 2:22 pmICN Incheon Intl-DEN Denver Intl

16h 42m1 stop Los Angeles

$1,382Asiana Airlines

Fri, Aug 14 - Sun, Sep 6

12:15 pm - 6:45 pmDEN Denver Intl-ICN Incheon Intl

15h 30m1 stop Calgary

8:45 pm - 11:20 amICN Incheon Intl-DEN Denver Intl

29h 35m1 stop Calgary

$1,466WestJet

Thu, Aug 13 - Sat, Aug 15

9:10 am - 4:05 pmDEN Denver Intl-ICN Incheon Intl

15h 55m1 stop Vancouver Intl

5:45 pm - 6:04 pmICN Incheon Intl-DEN Denver Intl

39h 19m2 stops Vancouver Intl Edmonton

$1,646Air Canada

Tue, Aug 11 - Thu, Aug 13

7:51 am - 4:05 pmDEN Denver Intl-ICN Incheon Intl

17h 14m1 stop Vancouver Intl

5:45 pm - 11:52 pmICN Incheon Intl-DEN Denver Intl

21h 07m1 stop Vancouver Intl

$5,546Air Canada

Wed, Aug 12 - Fri, Aug 14

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WestJet flights from Colorado to Seoul

Our best WestJet deals on Colorado to Seoul flight tickets

WestJet

Sep 10

DEN12:15 pmDenver Intl

15h 30m

1 stop

ICN6:45 pmIncheon Intl

Oct 17

ICN8:45 pmIncheon Intl

29h 35m

1 stop

DEN11:20 amDenver Intl

$886

WestJet

Sep 10

DEN12:15 pmDenver Intl

15h 30m

1 stop

ICN6:45 pmIncheon Intl

Oct 17

ICN8:45 pmIncheon Intl

29h 35m

1 stop

DEN11:20 amDenver Intl

$890

United Airlines flights from Colorado to Seoul

Our best United Airlines deals on Colorado to Seoul flight tickets

United Airlines

Oct 26

COS5:10 pmColorado Springs

20h 30m

2 stops

ICN4:40 amIncheon Intl

Nov 23

ICN6:00 pmIncheon Intl

30h 43m

2 stops

COS8:43 amColorado Springs

$1,112

United Airlines

Oct 8

COS5:30 amColorado Springs

18h 30m

2 stops

ICN3:00 pmIncheon Intl

Nov 12

ICN12:45 pmIncheon Intl

24h 04m

2 stops

COS8:49 pmColorado Springs

$1,212

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Wed 9/16

12:42 pm-3:50 pm

1 stop36h 08m

Incheon Intl

Mon 9/21

1:00 pm-3:05 pm

1 stop17h 05m

$846

Quickest round-trip

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Mon 10/26

9:47 am-9:20 pm

1 stop20h 33m

Incheon Intl

Mon 11/16

7:45 pm-10:59 pm

1 stop19h 14m

$854

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Thu 9/10

12:15 pm-6:45 pm

1 stop15h 30m

Incheon Intl

Sat 10/17

8:45 pm-11:20 am

1 stop29h 35m

$886

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Thu 9/10

12:15 pm-6:45 pm

1 stop15h 30m

Incheon Intl

Sat 10/17

8:45 pm-11:20 am

1 stop29h 35m

$890

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Wed 9/16

9:10 am-4:05 pm

1 stop15h 55m

Incheon Intl

Tue 9/22

5:45 pm-4:58 pm

1 stop38h 13m

$978

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Thu 9/17

9:10 am-4:05 pm

1 stop15h 55m

Incheon Intl

Tue 9/22

5:45 pm-4:58 pm

1 stop38h 13m

$1,002

Colorado SpringsIncheon

COS Colorado Springs - ICN Incheon Intl

COSICN

Colorado Springs

Mon 10/26

5:10 pm-4:40 am

2 stops20h 30m

Incheon Intl

Mon 11/23

6:00 pm-8:43 am

2 stops30h 43m

$1,112

Colorado SpringsIncheon

COS Colorado Springs - ICN Incheon Intl

COSICN

Colorado Springs

Thu 10/8

5:30 am-3:00 pm

2 stops18h 30m

Incheon Intl

Thu 11/12

12:45 pm-8:49 pm

2 stops24h 04m

$1,212

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Wed 9/9

8:06 pm-5:30 pm

2 stops30h 24m

Incheon Intl

Mon 10/5

7:35 pm-11:32 am

2 stops30h 57m

$1,266

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Tue 11/3

7:59 pm-5:35 pm

2 stops29h 36m

Incheon Intl

Mon 11/16

8:00 pm-12:59 pm

2 stops32h 59m

$1,266

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 October is another great option to travel to Seoul, with average flight prices from Colorado averaging around $1,148.

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 $1,298 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 $1,104 on momondo.

Can stopping save me money on Colorado to Seoul flights?

You could potentially save up to 41% 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	15h 30m
Direct flights	None

The fastest flight from Colorado to Seoul takes 15h 30m

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 August 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
United Airlines	PriceFrom $187	Free Cancellation	Rating 7.4 10,101 reviews	Search United Airlines flights
Delta	PriceFrom $478	Free Cancellation	Rating 7.8 8,506 reviews	Search Delta flights
Korean Air	PriceFrom $495	Free Cancellation	Rating 8.4 1,221 reviews	Search Korean Air flights
Alaska Airlines	PriceFrom $592	Free Cancellation	Rating 7.9 12,794 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $816	Free Cancellation	Rating 7.1 11,901 reviews	Search American Airlines flights
Air Canada	PriceFrom $906	Free Cancellation	Rating 7.1 11,462 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $1,035	Free Cancellation	Rating 8.1 554 reviews	Search Asiana Airlines flights
WestJet	PriceFrom $1,157	Free Cancellation	Rating 7.2 3,430 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.

An easier way to manage your Seoul trip

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Cheap flights from Colorado to Seoul from $372

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 8/24. 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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WestJet flights from Colorado to Seoul

Our best WestJet deals on Colorado to Seoul flight tickets

United Airlines flights from Colorado to Seoul

Our best United Airlines deals on Colorado to Seoul flight tickets

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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

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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