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$383+ Cheap flights from Colorado to South Korea

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — ICN
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Colorado to South Korea

Cheapest flights from Colorado to South Korea
Explore the most affordable flight options available from Colorado to South Korea. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/3110:29 pm
DEN
-
ICN
1 stop39h 51m
Multiple Airlines
Wed 4/226:20 pm
ICN
-
DEN
1 stop30h 22m
Multiple Airlines
Deal found 1/27$835
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/219:30 pm
DEN
-
ICN
1 stop27h 15m
Multiple Airlines
Tue 5/59:10 pm
ICN
-
DEN
2 stops37h 39m
Multiple Airlines
Deal found 1/27$838
This Kiwi.com deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:00 am
DEN
-
ICN
1 stop31h 10m
Multiple Airlines
Sun 3/89:20 pm
ICN
-
DEN
2 stops41h 59m
Multiple Airlines
Deal found 1/29$842
This Kiwi.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/710:30 pm
DEN
-
ICN
1 stop26h 15m
Multiple Airlines
Mon 4/206:20 pm
ICN
-
DEN
1 stop30h 22m
Multiple Airlines
Deal found 1/26$844
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/26:00 am
DEN
-
ICN
1 stop22h 30m
Multiple Airlines
Mon 3/166:55 pm
ICN
-
DEN
1 stop20h 42m
Multiple Airlines
Deal found 1/27$849
This CheapOair deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/67:50 pm
DEN
-
ICN
1 stop29h 15m
Multiple Airlines
Wed 5/278:40 pm
ICN
-
DEN
2 stops30h 55m
Multiple Airlines
Deal found 1/28$852
This CheapOair deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:16 pm
DEN
-
ICN
2 stops29h 49m
Multiple Airlines
Mon 4/278:40 pm
ICN
-
DEN
2 stops30h 53m
Multiple Airlines
Deal found 1/26$861
This Kiwi.com deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2810:43 pm
DEN
-
ICN
1 stop38h 27m
Multiple Airlines
Sat 3/78:35 pm
ICN
-
DEN
2 stops20h 12m
Multiple Airlines
Deal found 1/29$864
This Kiwi.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/49:31 pm
DEN
-
ICN
1 stop26h 49m
Multiple Airlines
Sun 3/156:55 pm
ICN
-
DEN
1 stop29h 52m
Multiple Airlines
Deal found 1/28$871
This United Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/111:33 am
COS
-
ICN
2 stops26h 07m
United Airlines
Thu 2/512:45 pm
ICN
-
COS
2 stops19h 43m
United Airlines
Deal found 1/28$921
This China Eastern deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Eastern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/96:30 am
DEN
-
PUS
2 stops38h 05m
China Eastern
Fri 3/1312:35 pm
PUS
-
DEN
2 stops44h 25m
China Eastern
Deal found 1/26$993
This United Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/16:35 pm
COS
-
ICN
2 stops18h 45m
United Airlines
Sat 8/294:50 pm
ICN
-
COS
2 stops22h 09m
United Airlines
Deal found 1/28$1,128

Find flight deals from Colorado to South Korea

Keep the following information in mind while searching for Colorado to South Korea flight deals. Data was last updated January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$835
(Kiwi.com)

One-way from

$383
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,294
Provider with most accurate pricing for Denver Intl-Seoul (SEL) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Seoul (SEL) flights.
Search Deals
From Colorado to South Korea
Search Deals
One-way flight from Colorado to South Korea
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($109 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($51 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado to South Korea that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from Colorado to South Korea that are best for you.

Fly from

Colorado

Fly to

South Korea

Route

Depart

Return

Price

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Wed 4/8

4:11 pm-4:05 pm

1 stop32h 54m

Incheon Intl

Mon 4/27

8:40 pm-12:38 pm

2 stops30h 58m

$862

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Sat 2/28

10:43 pm-5:10 am

1 stop38h 27m

Incheon Intl

Sat 3/7

1:20 pm-12:30 am

1 stop27h 10m

$889

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Tue 3/3

9:31 pm-4:20 pm

1 stop26h 49m

Incheon Intl

Tue 3/31

1:30 pm-12:31 am

2 stops50h 01m

$918

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Tue 3/10

10:29 pm-5:10 am

1 stop39h 41m

Incheon Intl

Tue 3/17

9:20 pm-5:07 pm

2 stops34h 47m

$941

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Mon 4/6

6:30 am-11:55 am

2 stops38h 25m

Incheon Intl

Sun 4/12

4:15 pm-6:01 pm

2 stops40h 46m

$944

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Tue 4/21

7:16 pm-4:05 pm

2 stops29h 49m

Incheon Intl

Wed 4/29

1:55 am-12:38 pm

2 stops25h 43m

$990

DenverBusan

DEN - PUS

DENPUS

Denver Intl

Mon 3/9

6:30 am-11:35 am

2 stops38h 05m

Busan Gimhae

Fri 3/13

12:35 pm-6:00 pm

2 stops44h 25m

$993

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Fri 3/13

6:30 am-11:55 am

2 stops38h 25m

Incheon Intl

Fri 3/20

8:55 am-6:00 pm

2 stops24h 05m

$997

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Thu 4/30

7:16 pm-4:05 pm

2 stops29h 49m

Incheon Intl

Sun 5/10

1:55 am-6:12 pm

2 stops31h 17m

$1,032

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Thu 4/30

8:45 am-4:05 pm

1 stop16h 20m

Incheon Intl

Thu 5/14

1:55 am-5:00 pm

2 stops30h 05m

$1,032

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 50 results
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Best time to book a flight from Colorado to South Korea

Have a flexible travel schedule? Discover the best time to fly to South Korea from Colorado with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Colorado to South Korea

What is the cheapest month to book a flight from Colorado to South Korea?

Currently, February is the cheapest month in which you can book a flight from Colorado to South Korea (average of $136). Flying from Colorado to South Korea in June is currently the most expensive (average of $1,408). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CO to KR?

Find hourly flight availability from Colorado to South Korea. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 29, 2026.

It’s typically best to fly out from Colorado to South Korea at noon. Doing so could potentially save you 15% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from Colorado to South Korea?

Use this chart to determine the cheapest time to fly round-trip from Colorado to South Korea. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their Colorado to South Korea flight should consider departing on Monday at noon when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Colorado to South Korea. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Colorado to South Korea?

    There are many flights that can get you from Colorado to South Korea in 18h 45m. Fly via China Eastern or American Airlines to get the fastest option. Colorado and South Korea are separated by a distance of 6242 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Colorado to South Korea one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $54. Users have also found prices from $88 and $105 on Southwest and United Airlines, respectively.

  • Can I find deals for flights from Colorado to South Korea that include hotel bookings?

    Yes. In addition to deals on Colorado to South Korea flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Colorado to South Korea?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado to South Korea.

  • Can I find deals for business class flights from Colorado to South Korea?

    Yes. Cheapflights offers flight deals from Colorado to South Korea by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Colorado to South Korea?

    Currently, February is the cheapest month in which you can book a flight from Colorado to South Korea (average of $136). Flying from Colorado to South Korea in June is currently the most expensive (average of $1,408). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Colorado to South Korea

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Colorado to South Korea

Discover the top 10 airlines that operate flights from Colorado to South Korea. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$54Average$142FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$187Average$1,029FlexibilityNo cancel feeOn-time69%
DeltaCheapest$474Average$1,066FlexibilityNo cancel feeOn-timeN/A
AIR PREMIACheapest$585Average$615FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$586Average$1,586FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$740Average$1,260FlexibilityNo cancel feeOn-time76%
WestJetCheapest$748Average$1,176FlexibilityNo cancel feeOn-time60%
American AirlinesCheapest$816Average$1,268FlexibilityNo cancel feeOn-time71%
Turkish AirlinesCheapest$863Average$999FlexibilityNo cancel feeOn-time77%
China EasternCheapest$914Average$1,754FlexibilityNo cancel feeOn-time62%

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