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$429+ 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 3/13. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — DEN
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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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 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.
Sat 1/318:35 pm
ICN
-
DEN
2 stops31h 03m
Multiple Airlines
Sat 2/77:00 am
DEN
-
ICN
1 stop19h 35m
Multiple Airlines
Deal found 1/27$635
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.
Mon 3/28:35 pm
ICN
-
DEN
1 stop36h 45m
Multiple Airlines
Thu 4/308:00 am
DEN
-
ICN
1 stop18h 30m
Multiple Airlines
Deal found 1/28$636
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/167:15 pm
ICN
-
DEN
1 stop19h 25m
American Airlines
Sun 2/2211:31 pm
DEN
-
ICN
2 stops25h 14m
American Airlines
Deal found 1/27$642
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/28:05 pm
ICN
-
DEN
2 stops34h 57m
Delta
Thu 4/308:10 am
DEN
-
ICN
2 stops17h 40m
Delta
Deal found 1/28$646
This Jetabroad 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/318:35 pm
ICN
-
DEN
1 stop19h 00m
Hawaiian Airlines
Sat 2/75:09 pm
DEN
-
ICN
1 stop33h 26m
Hawaiian Airlines
Deal found 1/27$660
This WhyPayMore 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/265:45 pm
ICN
-
DEN
1 stop16h 49m
Air Canada
Thu 6/259:40 am
DEN
-
ICN
1 stop15h 25m
Air Canada
Deal found 1/28$661
This Hanatour 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 Hanatour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/275:55 pm
ICN
-
DEN
1 stop15h 49m
Air Canada
Mon 3/27:05 pm
DEN
-
ICN
1 stop30h 05m
Air Canada
Deal found 1/27$673
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/206:00 pm
ICN
-
COS
2 stops32h 55m
United Airlines
Tue 2/245:59 am
COS
-
ICN
2 stops18h 16m
United Airlines
Deal found 1/26$675
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2712:45 pm
ICN
-
DEN
1 stop23h 19m
United Airlines
Mon 3/21:27 pm
DEN
-
ICN
1 stop34h 48m
United Airlines
Deal found 1/26$675
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/277:40 pm
ICN
-
DEN
1 stop16h 27m
Delta
Tue 2/246:50 pm
DEN
-
ICN
1 stop29h 40m
Delta
Deal found 1/27$680
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/207:15 pm
ICN
-
COS
1 stop17h 23m
American Airlines
Tue 2/2412:30 pm
COS
-
ICN
2 stops36h 15m
American Airlines
Deal found 1/27$875
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/165:00 pm
ICN
-
COS
2 stops20h 02m
United Airlines
Tue 3/245:15 pm
COS
-
ICN
2 stops20h 25m
United Airlines
Deal found 1/27$1,001

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$636
(Kiwi.com)

One-way from

$429
(FlightHub)

Popular in

October

Cheapest in

December

Average price

$711
Provider with most accurate pricing for Seoul (SEL)-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seoul (SEL)-Denver Intl flights.
Search Deals
From South Korea to Colorado
Search Deals
One-way flight from South Korea to Colorado
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($29 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 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 January 29, 2026.
Use the filters below to find and compare flights from South Korea to Colorado that are best for you.

Fly from

South Korea

Fly to

Colorado

Route

Depart

Return

Price

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Mon 3/2

8:05 pm-11:25 pm

1 stop19h 20m

Denver Intl

Thu 4/30

6:55 am-4:50 pm

1 stop18h 55m

$646

IncheonColorado Springs

ICN - COS

ICNCOS

Incheon Intl

Fri 2/20

6:00 pm-10:55 am

2 stops32h 55m

Colorado Springs

Tue 2/24

5:59 am-4:15 pm

2 stops18h 16m

$675

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Fri 2/27

12:45 pm-8:04 pm

1 stop23h 19m

Denver Intl

Mon 3/2

1:27 pm-4:15 pm

1 stop34h 48m

$675

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Fri 5/22

5:45 pm-5:00 pm

1 stop14h 15m

Denver Intl

Sun 6/7

7:50 pm-4:05 pm

1 stop29h 15m

$699

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Sat 5/23

5:45 pm-6:04 pm

2 stops39h 19m

Denver Intl

Thu 5/28

11:21 am-4:05 pm

2 stops37h 44m

$700

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Thu 5/14

5:45 pm-6:07 pm

2 stops39h 22m

Denver Intl

Fri 6/5

11:21 am-4:05 pm

2 stops37h 44m

$701

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Sun 3/15

5:55 pm-6:06 pm

2 stops39h 11m

Denver Intl

Sun 3/22

8:59 pm-4:15 pm

1 stop28h 16m

$710

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Sun 3/15

11:45 am-12:30 am

1 stop27h 45m

Denver Intl

Sun 3/22

7:45 am-4:40 am

1 stop29h 55m

$733

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Fri 5/1

5:45 pm-8:36 am

2 stops29h 51m

Denver Intl

Sat 5/9

7:16 pm-4:05 pm

2 stops29h 49m

$734

IncheonColorado Springs

ICN - COS

ICNCOS

Incheon Intl

Fri 2/20

7:15 pm-11:41 am

2 stops32h 26m

Colorado Springs

Tue 2/24

6:00 am-4:45 pm

1 stop18h 45m

$875

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 41 results
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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

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

Currently, November is the cheapest month in which you can book a flight from South Korea to Colorado (average of $488). Flying from South Korea to Colorado in February is currently the most expensive (average of $997). 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 KR to CO?

Find hourly flight availability from South Korea to Colorado. 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 South Korea to Colorado in the evening. Doing so could potentially save you 28% on the flight price compared to flying at noon, which is usually more expensive.

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

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

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

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 January 29, 2026.
Read through reviews of airlines operating flights from South Korea to Colorado, such as Korean Air, Asiana Airlines, and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,188 reviews

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

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!!
Korean Air
8.4
Very good
1,188 reviews
Korean Air
8.4
Very good
1,188 reviews

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

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!!
Asiana Airlines
8.1
Very good
501 reviews
Korean Air
8.4
Very good
1,188 reviews

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

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!!
Delta
7.9
Good
8,127 reviews
Korean Air
8.4
Very good
1,188 reviews

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

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!!
United Airlines
7.4
Good
9,215 reviews
Korean Air
8.4
Very good
1,188 reviews

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

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!!
Air Canada
7.1
Good
10,667 reviews
Korean Air
8.4
Very good
1,188 reviews

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

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 $699, Delta can have you in Colorado from South Korea in 14h 15m. 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 ($48), Southwest ($88), and United Airlines ($99).

  • 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, November is the cheapest month in which you can book a flight from South Korea to Colorado (average of $488). Flying from South Korea to Colorado in February is currently the most expensive (average of $997). 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 South Korea to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
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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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$589Average$845FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$601Average$686FlexibilityNo cancel feeOn-time67%
DeltaCheapest$620Average$877FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$695Average$760FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$709Average$809FlexibilityNo cancel feeOn-time76%

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