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$377+ Cheap flights from Incheon Intl (ICN) 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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — DEN
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Cheap flight deals from Incheon Intl to Colorado

Keep the following information in mind while searching for Incheon Intl to Colorado flight deals. Data was last updated October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$587
(American Airlines)

One-way from

$377
(Kiwi.com)

Popular in

October

Cheapest in

November

Average price

$1,232
Provider with most accurate pricing for Seoul (SEL)-Denver Intl flight deals.
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From Incheon Intl to Colorado
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One-way flight from Incheon Intl to Colorado
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Incheon Intl to Colorado

Cheapest flights from Incheon Intl to Colorado
Explore the most affordable flight options available from Incheon Intl to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

This American Airlines deal was found by Cheapflights users on 10/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/257:15 pmICN - DEN
1 stop34h 43mAmerican Airlines
Sun 12/74:36 pmDEN - ICN
2 stops56h 09mAmerican Airlines
Deal found 10/26$587
This Alaska Airlines deal was found by Cheapflights users on 10/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:35 pmICN - DEN
1 stop19h 24mAlaska Airlines
Thu 1/87:00 amDEN - ICN
1 stop19h 35mAlaska Airlines
Deal found 10/27$613
This Delta deal was found by Cheapflights users on 10/26. 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.
Mon 11/248:05 pmICN - DEN
1 stop14h 50mDelta
Mon 12/296:04 pmDEN - ICN
1 stop30h 26mDelta
Deal found 10/26$618
This Delta deal was found by Cheapflights users on 10/28. 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.
Wed 12/248:05 pmICN - DEN
2 stops31h 00mDelta
Thu 1/16:05 amDEN - ICN
1 stop18h 25mDelta
Deal found 10/28$620
This American Airlines deal was found by Cheapflights users on 10/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/217:15 pmICN - DEN
1 stop20h 41mAmerican Airlines
Mon 12/86:46 pmDEN - ICN
2 stops29h 59mAmerican Airlines
Deal found 10/26$629
This Delta deal was found by Cheapflights users on 10/26. 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.
Wed 11/266:00 pmICN - DEN
1 stop18h 38mDelta
Wed 12/246:00 amDEN - ICN
1 stop17h 30mDelta
Deal found 10/26$630
This United Airlines deal was found by Cheapflights users on 10/26. 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.
Mon 12/1512:45 pmICN - COS
2 stops17h 44mUnited Airlines
Fri 1/91:25 pmCOS - ICN
2 stops24h 15mUnited Airlines
Deal found 10/26$643
This United Airlines deal was found by Cheapflights users on 10/26. 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.
Mon 11/246:00 pmICN - DEN
1 stop30h 38mUnited Airlines
Sun 12/289:11 pmDEN - ICN
1 stop27h 04mUnited Airlines
Deal found 10/26$643
This United Airlines deal was found by Cheapflights users on 10/26. 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.
Tue 11/256:00 pmICN - COS
2 stops21h 59mUnited Airlines
Tue 12/26:00 amCOS - ICN
2 stops18h 15mUnited Airlines
Deal found 10/26$657
This Trip.com deal was found by Cheapflights users on 10/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2110:20 pmICN - DEN
1 stop36h 08mMultiple Airlines
Mon 12/86:00 amDEN - ICN
1 stop31h 10mMultiple Airlines
Deal found 10/26$658
This Alaska Airlines deal was found by Cheapflights users on 10/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/238:35 pmICN - DEN
1 stop19h 24mAlaska Airlines
Tue 12/307:20 amDEN - ICN
2 stops43h 15mAlaska Airlines
Deal found 10/26$659
This Delta deal was found by Cheapflights users on 10/26. 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.
Sun 11/238:05 pmICN - DEN
1 stop19h 22mDelta
Mon 12/296:04 pmDEN - ICN
1 stop30h 26mDelta
Deal found 10/26$670

Cheapflights Fare Finder

 
Customize your flight search to find flights from Incheon Intl 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 October 28, 2025.
Use the filters below to find and compare flights from Incheon Intl Airport to Colorado that are best for you.

Fly from

Incheon Intl

Fly to

Colorado

Route

Depart

Return

Price

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Mon 2/2

8:35 pm-11:36 pm

1 stop19h 01m

Denver Intl

Wed 2/4

5:09 pm-6:35 pm

1 stop33h 26m

$606

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Tue 11/25

7:15 pm-11:37 am

2 stops32h 22m

Denver Intl

Sun 12/7

10:58 am-4:45 pm

2 stops37h 47m

$615

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Wed 11/26

8:05 pm-11:27 pm

1 stop19h 22m

Denver Intl

Mon 12/29

6:04 pm-4:30 pm

1 stop30h 26m

$618

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Fri 2/6

7:40 pm-3:09 pm

1 stop35h 29m

Denver Intl

Sun 2/15

6:15 am-4:30 pm

1 stop18h 15m

$618

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Mon 2/2

7:15 pm-8:53 pm

1 stop17h 38m

Denver Intl

Wed 2/4

2:06 pm-4:45 pm

2 stops34h 39m

$618

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Wed 12/24

8:05 pm-11:22 am

1 stop31h 17m

Denver Intl

Thu 1/1

6:05 am-4:30 pm

1 stop18h 25m

$618

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Thu 11/27

8:05 pm-11:28 am

1 stop31h 23m

Denver Intl

Tue 12/30

6:05 am-4:30 pm

1 stop18h 25m

$618

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Fri 11/21

7:15 pm-11:56 pm

1 stop20h 41m

Denver Intl

Mon 12/8

6:46 pm-4:45 pm

2 stops29h 59m

$629

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Wed 11/26

6:00 pm-8:38 pm

1 stop18h 38m

Denver Intl

Wed 12/24

6:00 am-3:30 pm

1 stop17h 30m

$630

IncheonColorado Springs

ICN - COS

ICNCOS

Incheon Intl

Thu 12/18

6:00 pm-11:59 pm

2 stops21h 59m

Colorado Springs

Tue 1/13

5:05 pm-5:40 am

2 stops20h 35m

$643

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 32 results
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Best time to book a flight from Incheon Intl to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado from Incheon Intl 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 Incheon Intl Airport to Colorado

What is the cheapest month to book a flight from Incheon Intl Airport to Colorado?

Currently, November is the cheapest month in which you can book a flight from Incheon Intl Airport to Colorado (average of $540). Flying from Incheon Intl Airport to Colorado in February is currently the most expensive (average of $996). 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 ICN to CO?

Find hourly flight availability from Incheon Intl 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 October 28, 2025.

It’s optimal to fly from Incheon Intl Airport to Colorado in the afternoon. By choosing this option you can save up to 3% on the cost of your flight, compared to a flight at noon.

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 October 28, 2025.
Peruse reviews from past customers who have flown with Korean Air, Delta, and United Airlines from Incheon Intl Airport to Colorado to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,153 reviews

Comfort

8.3

Entertainment

8.2

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

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
1,153 reviews
Korean Air
8.4
Very good
1,153 reviews

Comfort

8.3

Entertainment

8.2

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

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
7,995 reviews
Korean Air
8.4
Very good
1,153 reviews

Comfort

8.3

Entertainment

8.2

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

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
8,996 reviews
Korean Air
8.4
Very good
1,153 reviews

Comfort

8.3

Entertainment

8.2

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

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!!
American Airlines
7.2
Good
11,033 reviews
Korean Air
8.4
Very good
1,153 reviews

Comfort

8.3

Entertainment

8.2

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

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
10,370 reviews
Korean Air
8.4
Very good
1,153 reviews

Comfort

8.3

Entertainment

8.2

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

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 Incheon Intl 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 Incheon Intl Airport to Colorado?

    Hawaiian Airlines, American Airlines, and Delta can get you from Incheon Intl Airport to Colorado in just under 19h 01m. Your travel time can differ by up to 13h 21m. Airlines will cover a distance of 6186 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Incheon Intl Airport to Colorado one-way?

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $620. However, be on the lookout for offers from American Airlines and Qatar Airways, as they are both options that can get you from Incheon Intl Airport to Colorado for a low price.

  • Can I find deals for flights from Incheon Intl to Colorado that include hotel bookings?

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

  • How can I find direct flights from Incheon Intl to Colorado?

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

  • Can I find deals for business class flights from Incheon Intl to Colorado?

    Yes. Cheapflights offers flight deals from Incheon Intl 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 Incheon Intl Airport to Colorado?

    Currently, November is the cheapest month in which you can book a flight from Incheon Intl Airport to Colorado (average of $540). Flying from Incheon Intl Airport to Colorado in February is currently the most expensive (average of $996). 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.

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Alternative routes for Incheon Intl to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Incheon Intl to Colorado

Discover the top 6 airlines that operate flights from Incheon Intl 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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$589Average$981FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$601Average$811FlexibilityNo cancel feeOn-time67%
DeltaCheapest$622Average$934FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$695Average$827FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$709Average$1,014FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$757Average$983FlexibilityNo cancel feeOn-time71%

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