HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Colorado

$365+ 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — DEN
May 4 — May 111
Sun 5/4
Sun 5/11
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 April 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$720
(United Airlines)

One-way from

$365
(Kiwi.com)

Popular in

August

Cheapest in

March

Average price

$1,230
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 Incheon Intl to Colorado
Search Deals
One-way flight from Incheon Intl to Colorado
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($211 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 29, 2025.

This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/54:50 pmICN - DEN
2 stops34h 26mUnited Airlines
Wed 5/75:20 amDEN - ICN
1 stop18h 40mUnited Airlines
Deal found 4/29$703
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/52:40 pmICN - DEN
2 stops28h 20mMultiple Airlines
Thu 5/88:15 amDEN - ICN
1 stop29h 05mMultiple Airlines
Deal found 4/29$712
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 5/57:20 pmICN - DEN
2 stops18h 06mDelta
Wed 5/75:30 amDEN - ICN
2 stops20h 50mDelta
Deal found 4/29$740
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.
Sun 9/711:30 amICN - COS
2 stops25h 24mUnited Airlines
Thu 10/26:00 amCOS - ICN
2 stops18h 00mUnited Airlines
Deal found 4/27$769
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/85:45 pmICN - DEN
1 stop18h 38mAir Canada
Fri 9/127:52 amDEN - ICN
1 stop17h 13mAir Canada
Deal found 4/29$798
This Korean Air 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/104:40 pmICN - DEN
1 stop16h 17mKorean Air
Wed 5/147:45 amDEN - ICN
1 stop17h 45mKorean Air
Deal found 4/29$861
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/148:45 pmICN - DEN
1 stop29h 42mWestJet
Thu 7/317:40 pmDEN - ICN
1 stop32h 05mWestJet
Deal found 4/29$1,077
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/25:25 pmICN - DEN
2 stops29h 57mAmerican Airlines
Fri 8/1511:59 pmDEN - ICN
2 stops24h 31mAmerican Airlines
Deal found 4/29$1,097
This Singapore Airlines 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2411:50 pmICN - DEN
3 stops34h 50mSingapore Airlines
Tue 9/305:55 pmDEN - ICN
2 stops37h 25mSingapore Airlines
Deal found 4/29$1,475
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2012:10 amICN - DEN
1 stop33h 30mTurkish Airlines
Sun 1/47:35 pmDEN - ICN
1 stop30h 45mTurkish Airlines
Deal found 4/29$1,530
This Korean Air deal was found by Cheapflights users on 4/28. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/177:40 pmICN - COS
1 stop17h 48mMultiple Airlines
Thu 8/218:00 amCOS - ICN
1 stop16h 20mMultiple Airlines
Deal found 4/28$1,633
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/261:35 amICN - DEN
2 stops34h 55mEtihad Airways
Tue 6/311:59 pmDEN - ICN
2 stops55h 06mEtihad Airways
Deal found 4/29$1,641

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 April 29, 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 9/15

4:50 pm-4:35 pm

1 stop14h 45m

Denver Intl

Fri 9/19

10:09 am-4:20 am

1 stop27h 11m

$720

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Tue 5/27

4:40 pm-4:49 pm

1 stop15h 09m

Denver Intl

Tue 6/3

8:00 am-4:40 pm

1 stop17h 40m

$742

IncheonColorado Springs

ICN - COS

ICNCOS

Incheon Intl

Sun 9/7

11:30 am-9:54 pm

2 stops25h 24m

Colorado Springs

Thu 10/2

6:00 am-3:00 pm

2 stops18h 00m

$769

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Mon 9/8

5:45 pm-9:23 pm

1 stop18h 38m

Denver Intl

Fri 9/12

7:52 am-4:05 pm

1 stop17h 13m

$798

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Mon 6/2

7:20 pm-9:47 pm

1 stop17h 27m

Denver Intl

Thu 6/5

7:05 am-4:40 pm

2 stops18h 35m

$809

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Sat 5/10

4:40 pm-5:57 pm

1 stop16h 17m

Denver Intl

Wed 5/14

7:45 am-4:30 pm

1 stop17h 45m

$861

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Mon 7/14

8:45 pm-11:27 am

1 stop29h 42m

Denver Intl

Thu 7/31

7:40 pm-6:45 pm

1 stop32h 05m

$1,077

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Sat 8/2

5:25 pm-8:22 am

2 stops29h 57m

Denver Intl

Fri 8/15

11:59 pm-3:30 pm

2 stops24h 31m

$1,097

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Wed 9/24

11:50 pm-7:40 pm

3 stops34h 50m

Denver Intl

Tue 9/30

5:55 pm-10:20 pm

2 stops37h 25m

$1,475

IncheonColorado Springs

ICN - COS

ICNCOS

Incheon Intl

Sun 8/17

7:40 pm-10:28 pm

1 stop17h 48m

Colorado Springs

Thu 8/21

8:00 am-3:20 pm

1 stop16h 20m

$1,633

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 27 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 April 29, 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.

Rainfall in Colorado by month

Plan your trip to Colorado by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Colorado ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Colorado when rainfall is around 0.5 in.

Temperature in Colorado by month

Plan your trip to Colorado by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Colorado, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 29, 2025.
Read through reviews of airlines operating flights from Seoul to Colorado, such as Korean Air, Singapore Airlines and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,066 reviews

Entertainment

8.2

Boarding

8.5

Overall

8.4

Crew

8.7

Food

8.1

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
Korean Air
8.4
Very good
1,066 reviews
Korean Air
8.4
Very good
1,066 reviews

Entertainment

8.2

Boarding

8.5

Overall

8.4

Crew

8.7

Food

8.1

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
Singapore Airlines
8.1
Very good
1,292 reviews
Korean Air
8.4
Very good
1,066 reviews

Entertainment

8.2

Boarding

8.5

Overall

8.4

Crew

8.7

Food

8.1

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
Delta
8.0
Very good
7,936 reviews
Korean Air
8.4
Very good
1,066 reviews

Entertainment

8.2

Boarding

8.5

Overall

8.4

Crew

8.7

Food

8.1

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
Qatar Airways
7.4
Good
3,563 reviews
Korean Air
8.4
Very good
1,066 reviews

Entertainment

8.2

Boarding

8.5

Overall

8.4

Crew

8.7

Food

8.1

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
United Airlines
7.4
Good
8,696 reviews
Korean Air
8.4
Very good
1,066 reviews

Entertainment

8.2

Boarding

8.5

Overall

8.4

Crew

8.7

Food

8.1

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

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.

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

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $506. However, be on the lookout for offers from American Airlines and Delta, 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, 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 Newark flights
Incheon Intl to LaGuardia flights
Incheon Intl to Seattle flights
Incheon Intl to Honolulu flights
Incheon Intl to Dulles Intl flights
Incheon Intl to Dallas/Fort Worth flights
Incheon Intl to San Francisco flights
Gimpo Intl to John F Kennedy Intl flights
Incheon Intl to O'Hare Intl flights
Gimpo Intl to Los Angeles flights
Incheon Intl to Atlanta flights
Gimpo Intl to Honolulu flights
Gimpo Intl to San Francisco flights
Incheon Intl to Boston flights
Incheon Intl to Ontario flights
Incheon Intl to Las Vegas flights
Incheon Intl to San Jose flights
Gimpo Intl to Newark flights
Incheon Intl to Detroit flights
Incheon Intl to Reagan-National flights
Incheon Intl to Baltimore flights
Incheon Intl to Santa Ana flights
Incheon Intl to Minneapolis flights
Gimpo Intl to O'Hare Intl flights
Incheon Intl to Oakland flights
Incheon Intl to Love Field flights
Incheon Intl to Burbank flights
Incheon Intl to Midway flights
Incheon Intl to Orlando flights
Incheon Intl to Raleigh flights
Incheon Intl to Denver flights
Incheon Intl to Austin flights
Incheon Intl to Tampa flights
Incheon Intl to Portland flights
Gimpo Intl to Boston flights
Gimpo Intl to Baltimore flights
Incheon Intl to Salt Lake City flights
Gimpo Intl to Atlanta flights
Incheon Intl to Nashville flights
Incheon Intl to Charlotte flights
Incheon Intl to Sky Harbor Intl flights
Incheon Intl to Hobby 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$685Average$1,273FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$696Average$897FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$735Average$963FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$910Average$1,122FlexibilityNo cancel feeOn-time81%
DeltaCheapest$1,006Average$1,035FlexibilityNo cancel feeOn-timeN/A
Asiana AirlinesCheapest$1,014Average$1,173FlexibilityNo 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.