Colorado

$462+ Cheap flights from South Korea to Colorado

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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — DEN
May 30 — Jun 61
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Cheap flight deals from South Korea to Colorado

Cheapest flights from South Korea to Colorado
Explore the most affordable flight options available from South Korea to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2026.

This United Airlines deal was found by Cheapflights users on 4/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2811:30 am
ICN
-
DEN
1 stop26h 29m
United Airlines
Tue 5/55:59 pm
DEN
-
ICN
2 stops30h 01m
United Airlines
Deal found 4/27$880
This lastminute.com deal was found by Cheapflights users on 4/29. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/89:40 pm
ICN
-
DEN
1 stop16h 35m
Asiana Airlines
Tue 6/236:04 am
DEN
-
ICN
1 stop18h 16m
Asiana Airlines
Deal found 4/29$891
This Hanatour deal was found by Cheapflights users on 4/27. 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 Hanatour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:20 pm
ICN
-
DEN
1 stop14h 55m
Delta
Wed 7/226:00 am
DEN
-
ICN
1 stop20h 20m
Delta
Deal found 4/27$893
This FlightHub deal was found by Cheapflights users on 4/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/612:40 pm
ICN
-
DEN
1 stop16h 42m
Asiana Airlines
Tue 10/207:25 pm
DEN
-
ICN
1 stop18h 00m
Asiana Airlines
Deal found 4/27$901
This YBTour deal was found by Cheapflights users on 4/29. 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 YBTour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/89:40 pm
ICN
-
DEN
1 stop16h 35m
Asiana Airlines
Sun 7/55:32 am
DEN
-
ICN
1 stop18h 48m
Asiana Airlines
Deal found 4/29$905
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:20 pm
ICN
-
DEN
1 stop29h 24m
Delta
Mon 1/112:20 pm
DEN
-
ICN
1 stop33h 30m
Delta
Deal found 4/29$909
This Delta deal was found by Cheapflights users on 4/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/87:20 pm
ICN
-
DEN
1 stop14h 50m
Delta
Wed 10/215:40 am
DEN
-
ICN
2 stops20h 10m
Delta
Deal found 4/26$912
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:20 pm
ICN
-
DEN
1 stop14h 50m
Delta
Mon 10/196:45 am
DEN
-
ICN
1 stop19h 05m
Delta
Deal found 4/29$914
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 6/17:35 pm
ICN
-
DEN
2 stops19h 14m
Alaska Airlines
Mon 7/276:02 am
DEN
-
ICN
1 stop20h 28m
Alaska Airlines
Deal found 4/27$917
This modetour deal was found by Cheapflights users on 4/27. 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 modetour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:35 pm
ICN
-
DEN
2 stops19h 14m
Alaska Airlines
Wed 7/227:59 pm
DEN
-
ICN
2 stops30h 31m
Alaska Airlines
Deal found 4/27$919
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 5/187:35 pm
ICN
-
DEN
1 stop30h 49m
Alaska Airlines
Wed 6/39:00 am
DEN
-
ICN
1 stop17h 30m
Alaska Airlines
Deal found 4/27$921
This United Airlines deal was found by Cheapflights users on 4/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/612:45 pm
ICN
-
COS
2 stops27h 14m
United Airlines
Tue 11/105:13 pm
COS
-
ICN
2 stops20h 27m
United Airlines
Deal found 4/26$949

Find flight deals from South Korea to Colorado

Keep the following information in mind while searching for South Korea to Colorado flight deals. Data was last updated April 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$891
(lastminute.com)

One-way from

$462
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$636
Provider with most accurate pricing for Seoul (SEL)-Denver Intl flight deals.
Provider most trusted by Cheapflights users for Seoul (SEL)-Denver Intl flights.
From South Korea to Colorado
One-way flight from South Korea to Colorado
Highest demand for flights based on searches. 13% potential increase in price ($136 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
Average for round-trip flights in April 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from South Korea to Colorado 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 April 30, 2026.
Use the filters below to find and compare flights from South Korea to Colorado that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Mon 6/8

7:35 pm-11:59 pm

1 stop19h 24m

Denver Intl

Sun 7/5

6:00 am-5:30 pm

2 stops44h 30m

$934

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Thu 9/10

11:30 am-6:10 pm

1 stop21h 40m

Denver Intl

Mon 9/14

5:45 pm-3:00 pm

1 stop30h 15m

$945

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Fri 10/9

4:40 pm-7:10 pm

2 stops17h 30m

Denver Intl

Tue 10/20

3:40 pm-4:40 am

2 stops22h 00m

$980

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Sat 5/23

7:35 pm-9:51 pm

1 stop17h 16m

Denver Intl

Sat 6/6

7:51 pm-5:30 pm

2 stops30h 39m

$1,072

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Mon 10/12

7:35 pm-11:34 am

2 stops30h 59m

Denver Intl

Sat 10/24

7:00 am-5:35 pm

1 stop19h 35m

$1,074

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Fri 6/19

7:35 pm-10:33 am

2 stops29h 58m

Denver Intl

Mon 7/27

7:59 pm-5:30 pm

2 stops54h 31m

$1,080

SeoulDenver

GMP - DEN

GMPDEN

Seoul Gimpo Intl

Mon 6/22

12:40 pm-11:38 pm

2 stops25h 58m

Denver Intl

Tue 7/28

1:26 pm-6:35 pm

2 stops38h 09m

$1,083

SeoulDenver

GMP - DEN

GMPDEN

Seoul Gimpo Intl

Wed 6/17

12:40 pm-11:38 pm

2 stops25h 58m

Denver Intl

Wed 7/29

1:26 pm-11:05 am

2 stops30h 39m

$1,085

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Tue 6/2

7:00 pm-11:50 pm

1 stop19h 50m

Denver Intl

Mon 6/8

4:43 pm-4:00 am

1 stop20h 17m

$1,114

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Mon 6/22

7:20 pm-10:41 pm

1 stop18h 21m

Denver Intl

Sun 7/26

9:19 am-5:20 pm

1 stop17h 01m

$1,145

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 46 resultsSorted by cheapest first
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Best time to book a flight from South Korea to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado from South Korea 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 South Korea to Colorado

How far ahead should I book a flight from South Korea to Colorado?

Booking 63 days in advance of your planned departure date is, on average, the best time to get cheap flights from South Korea to Colorado. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, March is the cheapest month in which you can book a flight from South Korea to Colorado (average of $146). Flying from South Korea to Colorado in February is currently the most expensive (average of $768). 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.

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Colorado. Reviews last updated April 30, 2026.
Read through reviews of airlines operating flights from South Korea to Colorado, such as Korean Air,Asiana Airlines, andDelta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

8.1

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Food

8.1

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Food

8.1

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Food

8.1

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Food

8.1

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Food

8.1

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Related info for your journey

Find useful and relevant information for your journey from South Korea to Colorado. 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 South Korea to Colorado?

    For as low as $980, Alaska Airlines can have you in Colorado from South Korea in 17h 30m. There are 6186 mi between South Korea and Colorado. This flight may include one or multiple stops.

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

    The cheapest airlines for a one-way flight from South Korea to Colorado are Frontier ($49), Southwest ($88), and United Airlines ($103).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from South Korea to Colorado 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 South Korea to Colorado?

    Currently, March is the cheapest month in which you can book a flight from South Korea to Colorado (average of $146). Flying from South Korea to Colorado in February is currently the most expensive (average of $768). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for South Korea to Colorado

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from South Korea to Colorado

Discover the top 5 airlines that operate flights from South Korea to Colorado. 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 April 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$589Average$845FlexibilityNo cancel feeOn-time69%
DeltaCheapest$620Average$814FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$686Average$686FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$688Average$800FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$695Average$799FlexibilityNo cancel feeOn-time81%

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