HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Colorado

$363+ 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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — DEN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Incheon Intl to Colorado with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 September 11, 2025.

Round-trip from

$519
(United Airlines)

One-way from

$363
(Trip.com)

Popular in

October

Cheapest in

November

Average price

$1,025
From Incheon Intl to Colorado
Search Deals
One-way flight from Incheon Intl to Colorado
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($42 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

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 September 11, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/11. 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 10/268:35 pmICN - DEN
2 stops29h 00mAlaska Airlines
Thu 10/307:19 pmDEN - ICN
2 stops32h 16mAlaska Airlines
Deal found 9/11$523
This Alaska Airlines deal was found by Cheapflights users on 9/11. 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 12/118:35 pmICN - DEN
2 stops38h 49mAlaska Airlines
Mon 1/127:04 pmDEN - ICN
2 stops55h 31mAlaska Airlines
Deal found 9/11$541
This Trip.com deal was found by Cheapflights users on 9/10. 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.
Sat 10/258:35 pmICN - DEN
1 stop19h 00mMultiple Airlines
Sat 11/110:00 amDEN - ICN
1 stop17h 35mMultiple Airlines
Deal found 9/10$545
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Fri 10/178:35 pmICN - DEN
1 stop19h 00mMultiple Airlines
Wed 10/2910:00 amDEN - ICN
1 stop17h 35mMultiple Airlines
Deal found 9/10$575
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 10/268:35 pmICN - DEN
1 stop19h 00mMultiple Airlines
Thu 10/3010:00 amDEN - ICN
1 stop17h 35mMultiple Airlines
Deal found 9/11$598
This Gotogate deal was found by Cheapflights users on 9/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:00 pmICN - DEN
1 stop39h 18mAir Canada
Wed 9/249:40 amDEN - ICN
1 stop39h 35mAir Canada
Deal found 9/10$634
This Delta deal was found by Cheapflights users on 9/11. 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 10/77:40 pmICN - DEN
1 stop28h 49mDelta
Tue 10/286:05 amDEN - ICN
1 stop18h 25mDelta
Deal found 9/11$636
This Delta deal was found by Cheapflights users on 9/11. 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.
Fri 10/107:20 pmICN - DEN
2 stops29h 09mDelta
Mon 11/36:23 pmDEN - ICN
2 stops30h 07mDelta
Deal found 9/11$637
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Thu 12/116:00 pmICN - COS
2 stops30h 41mUnited Airlines
Thu 1/81:25 pmCOS - ICN
2 stops24h 15mUnited Airlines
Deal found 9/11$663
This American Airlines deal was found by Cheapflights users on 9/11. 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 10/75:45 pmICN - DEN
2 stops29h 54mAmerican Airlines
Tue 10/2811:59 pmDEN - ICN
2 stops24h 56mAmerican Airlines
Deal found 9/11$705
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Thu 12/116:50 pmICN - COS
1 stop20h 58mAmerican Airlines
Mon 1/126:13 amCOS - ICN
1 stop18h 32mAmerican Airlines
Deal found 9/11$841
This American Airlines deal was found by Cheapflights users on 9/9. 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.
Sat 10/255:45 pmICN - COS
1 stop19h 24mAmerican Airlines
Fri 10/316:02 amCOS - ICN
1 stop18h 53mAmerican Airlines
Deal found 9/9$843

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 September 11, 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

6:00 pm-8:28 am

2 stops30h 28m

Denver Intl

Wed 2/4

7:47 am-5:40 am

1 stop29h 53m

$519

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Sun 10/26

8:35 pm-10:35 am

2 stops29h 00m

Denver Intl

Thu 10/30

7:19 pm-6:35 pm

2 stops32h 16m

$523

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Thu 12/11

8:35 pm-7:24 pm

2 stops38h 49m

Denver Intl

Mon 1/12

7:04 pm-6:35 pm

2 stops55h 31m

$541

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Mon 2/2

8:35 pm-7:19 pm

1 stop14h 44m

Denver Intl

Wed 2/4

12:35 pm-6:35 pm

1 stop38h 00m

$622

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Tue 10/7

7:40 pm-9:29 am

1 stop28h 49m

Denver Intl

Tue 10/28

6:05 am-3:30 pm

1 stop18h 25m

$636

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Fri 10/10

7:40 pm-7:01 pm

1 stop14h 21m

Denver Intl

Sat 11/22

12:18 pm-4:30 pm

1 stop36h 12m

$637

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Fri 10/10

7:20 pm-11:28 am

1 stop31h 08m

Denver Intl

Mon 11/3

6:23 pm-4:30 pm

2 stops30h 07m

$637

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Tue 11/25

8:05 pm-9:23 am

2 stops29h 18m

Denver Intl

Sun 12/7

12:18 pm-4:30 pm

1 stop36h 12m

$637

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Wed 11/26

7:30 pm-10:29 pm

2 stops18h 59m

Denver Intl

Sun 12/7

3:54 pm-4:30 pm

2 stops32h 36m

$637

IncheonColorado Springs

ICN - COS

ICNCOS

Incheon Intl

Thu 12/11

6:00 pm-8:41 am

2 stops30h 41m

Colorado Springs

Thu 1/8

1:25 pm-5:40 am

2 stops24h 15m

$663

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 24 results
1
2
3

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, October is the cheapest month in which you can book a flight from Incheon Intl Airport to Colorado (average of $197). Flying from Incheon Intl Airport to Colorado in March is currently the most expensive (average of $278). 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 September 11, 2025.

When flying from Incheon Intl Airport to Colorado, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 September 11, 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
1,139 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

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
1,139 reviews
Korean Air
8.4
Very good
1,139 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

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
8.0
Very good
7,960 reviews
Korean Air
8.4
Very good
1,139 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

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
8,937 reviews
Korean Air
8.4
Very good
1,139 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

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!!
American Airlines
7.2
Good
10,000 reviews
Korean Air
8.4
Very good
1,139 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

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
10,000 reviews
Korean Air
8.4
Very good
1,139 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

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 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?

    United Airlines, Alaska Airlines, and American Airlines can get you from Incheon Intl Airport to Colorado in just under 20h 58m. Your travel time can differ by up to 9h 30m. Airlines will cover a distance of 6242 mi. This flight may include one or multiple stops.

  • 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, October is the cheapest month in which you can book a flight from Incheon Intl Airport to Colorado (average of $197). Flying from Incheon Intl Airport to Colorado in March is currently the most expensive (average of $278). 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 Incheon Intl to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
Incheon Intl to John F Kennedy Intl flights
Incheon Intl to Los Angeles flights
Incheon Intl to LaGuardia flights
Incheon Intl to San Francisco flights
Incheon Intl to Seattle flights
Incheon Intl to O'Hare Intl flights
Incheon Intl to Honolulu flights
Gimpo Intl to John F Kennedy Intl flights
Incheon Intl to Newark flights
Incheon Intl to Ontario flights
Gimpo Intl to Honolulu flights
Gimpo Intl to Los Angeles flights
Incheon Intl to Dulles Intl flights
Incheon Intl to Las Vegas flights
Incheon Intl to Boston flights
Incheon Intl to Atlanta flights
Incheon Intl to Dallas/Fort Worth flights
Gimpo Intl to San Francisco flights
Incheon Intl to Santa Ana flights
Gimpo Intl to Newark flights
Incheon Intl to Reagan-National flights
Incheon Intl to Detroit flights
Incheon Intl to San Jose flights
Incheon Intl to Tampa flights
Incheon Intl to Orlando flights
Incheon Intl to Burbank flights
Incheon Intl to Midway flights
Incheon Intl to Baltimore flights
Gimpo Intl to O'Hare Intl flights
Gimpo Intl to Boston flights
Incheon Intl to Hobby flights
Incheon Intl to Philadelphia flights
Gimpo Intl to Atlanta flights
Incheon Intl to Denver flights
Incheon Intl to San Diego flights
Incheon Intl to Portland flights
Incheon Intl to Nashville flights
Incheon Intl to Minneapolis flights
Incheon Intl to Austin flights
Incheon Intl to Sky Harbor Intl flights
Gimpo Intl to Baltimore flights
Incheon Intl to Salt Lake City flights
Incheon Intl to Panama City flights
Incheon Intl to Miami flights

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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$658Average$981FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$686Average$847FlexibilityNo cancel feeOn-time67%
DeltaCheapest$755Average$1,007FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$757Average$897FlexibilityNo cancel feeOn-time71%
Korean AirCheapest$783Average$1,041FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$800Average$1,070FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.