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Incheon Intl

$421+ Cheap flights from Colorado to Incheon Intl (ICN)

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 7/20. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — ICN
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Cheap flight deals from Colorado to Incheon Intl

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

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$812
(Kiwi.com)

One-way from

$446
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,201
Provider with most accurate pricing for Denver Intl-Seoul (SEL) flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Seoul (SEL) flights.
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From Colorado to Incheon Intl
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One-way flight from Colorado to Incheon Intl
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Highest demand for flights based on searches. 28% potential increase in price ($568 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($77 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Colorado to Incheon Intl

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

This Kiwi.com deal was found by Cheapflights users on 3/25. 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 5/910:18 pmDEN - ICN
1 stop31h 12mMultiple Airlines
Mon 5/126:20 pmICN - DEN
1 stop21h 18mMultiple Airlines
Deal found 3/25$788
This Kiwi.com deal was found by Cheapflights users on 3/27. 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.
Fri 5/307:40 pmDEN - ICN
1 stop32h 05mWestJet
Tue 6/38:45 pmICN - DEN
1 stop29h 42mWestJet
Deal found 3/27$862
This FlightHub deal was found by Cheapflights users on 3/25. 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 9/27:50 pmDEN - ICN
1 stop30h 50mTurkish Airlines
Sun 9/711:20 pmICN - DEN
1 stop33h 35mTurkish Airlines
Deal found 3/25$895
This FlightHub deal was found by Cheapflights users on 3/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/157:05 amDEN - ICN
2 stops41h 15mChina Eastern
Thu 5/296:25 pmICN - DEN
2 stops38h 54mChina Eastern
Deal found 3/26$939
This United Airlines deal was found by Cheapflights users on 3/26. 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 9/293:25 pmCOS - ICN
2 stops21h 55mUnited Airlines
Tue 11/186:00 pmICN - COS
2 stops19h 58mUnited Airlines
Deal found 3/26$1,333
This Korean Air deal was found by Cheapflights users on 3/26. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/296:27 amCOS - ICN
1 stop19h 13mMultiple Airlines
Tue 11/1810:20 amICN - COS
1 stop25h 49mMultiple Airlines
Deal found 3/26$1,595
This oojo deal was found by Cheapflights users on 3/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/161:06 pmCOS - ICN
2 stops36h 59mQatar Airways
Mon 9/221:20 amICN - COS
2 stops37h 05mQatar Airways
Deal found 3/27$1,976
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Tue 9/166:27 amCOS - ICN
1 stop18h 03mAmerican Airlines
Tue 9/235:25 pmICN - COS
1 stop21h 00mAmerican Airlines
Deal found 3/27$2,009
This Delta deal was found by Cheapflights users on 3/27. 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 9/168:00 amCOS - ICN
1 stop16h 20mDelta
Tue 9/236:40 pmICN - COS
2 stops37h 33mDelta
Deal found 3/27$2,255
This Justfly.com deal was found by Cheapflights users on 3/26. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2011:46 amCOS - ICN
2 stops37h 19mAir Canada
Sun 5/115:45 pmICN - COS
2 stops39h 09mAir Canada
Deal found 3/26$4,868

Cheapflights Fare Finder

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

Fly from

Colorado

Fly to

Incheon Intl

Route

Depart

Return

Price

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Fri 5/9

10:18 pm-8:30 pm

1 stop31h 12m

Incheon Intl

Mon 5/12

6:20 pm-12:38 am

1 stop21h 18m

$788

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Fri 5/30

7:40 pm-6:45 pm

1 stop32h 05m

Incheon Intl

Tue 6/3

8:45 pm-11:27 am

1 stop29h 42m

$862

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Tue 9/2

7:50 pm-5:40 pm

1 stop30h 50m

Incheon Intl

Sun 9/7

11:20 pm-5:55 pm

1 stop33h 35m

$895

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Tue 4/15

7:05 am-3:20 pm

2 stops41h 15m

Incheon Intl

Thu 5/29

6:25 pm-6:19 pm

2 stops38h 54m

$939

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Tue 5/6

7:18 pm-4:05 pm

2 stops29h 47m

Incheon Intl

Thu 5/15

5:45 pm-8:51 am

2 stops30h 06m

$1,262

Colorado SpringsIncheon

COS - ICN

COSICN

Colorado Springs

Tue 9/16

3:25 pm-4:20 am

2 stops21h 55m

Incheon Intl

Tue 9/23

4:50 pm-9:54 pm

2 stops20h 04m

$1,373

Colorado SpringsIncheon

COS - ICN

COSICN

Colorado Springs

Tue 9/16

1:06 pm-5:05 pm

2 stops36h 59m

Incheon Intl

Mon 9/22

1:20 am-11:25 pm

2 stops37h 05m

$1,976

Colorado SpringsIncheon

COS - ICN

COSICN

Colorado Springs

Tue 9/16

6:27 am-3:30 pm

1 stop18h 03m

Incheon Intl

Tue 9/23

5:25 pm-11:25 pm

1 stop21h 00m

$2,009

Colorado SpringsIncheon

COS - ICN

COSICN

Colorado Springs

Sun 4/20

4:39 pm-4:40 pm

1 stop33h 01m

Incheon Intl

Sun 5/11

5:25 pm-11:45 pm

1 stop21h 20m

$2,129

Colorado SpringsIncheon

COS - ICN

COSICN

Colorado Springs

Tue 9/16

8:00 am-3:20 pm

1 stop16h 20m

Incheon Intl

Tue 9/23

6:40 pm-5:13 pm

2 stops37h 33m

$2,255

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 18 results
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Best time to book a flight from Colorado to Incheon Intl

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

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

Currently, February is the cheapest month in which you can book a flight from Colorado to Incheon Intl Airport (average of $1,002). Flying from Colorado to Incheon Intl Airport in June is currently the most expensive (average of $1,661). 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 CO to ICN?

Find hourly flight availability from Colorado to Incheon Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to Incheon Intl Airport as you normally would.

Rainfall in Incheon Intl by month

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

In terms of precipitation, rainfall in Incheon Intl Airport ranges from 0.8 - 10.2 inches per month. July is typically the wettest month, when rainfall can reach 10.2 in. January is typically the driest time to visit Incheon Intl Airport when rainfall is around 0.8 in.

Temperature in Incheon Intl by month

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

If weather is an important factor for your trip to Incheon Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

Reviews of airlines servicing Incheon Intl

Get insights into the airlines that provide service to Incheon Intl. 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 Incheon Intl. Reviews last updated March 28, 2025.
See what other customers who have flown with Korean Air, Singapore Airlines and Alaska Airlines from Colorado to Seoul have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,050 reviews

Crew

8.7

Food

8.1

Overall

8.4

Entertainment

8.2

Comfort

8.3

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,050 reviews
Korean Air
8.4
Very good
1,050 reviews

Crew

8.7

Food

8.1

Overall

8.4

Entertainment

8.2

Comfort

8.3

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Singapore Airlines
8.1
Very good
1,285 reviews
Korean Air
8.4
Very good
1,050 reviews

Crew

8.7

Food

8.1

Overall

8.4

Entertainment

8.2

Comfort

8.3

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Alaska Airlines
8.0
Very good
9,798 reviews
Korean Air
8.4
Very good
1,050 reviews

Crew

8.7

Food

8.1

Overall

8.4

Entertainment

8.2

Comfort

8.3

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Delta
8.0
Very good
7,896 reviews
Korean Air
8.4
Very good
1,050 reviews

Crew

8.7

Food

8.1

Overall

8.4

Entertainment

8.2

Comfort

8.3

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Qatar Airways
7.4
Good
3,538 reviews
Korean Air
8.4
Very good
1,050 reviews

Crew

8.7

Food

8.1

Overall

8.4

Entertainment

8.2

Comfort

8.3

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from Colorado to Incheon Intl. 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 Colorado to Incheon Intl Airport one-way?

    $496 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Air Canada and Philippine Airlines, with prices starting from $705 and $727, respectively.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Colorado to Incheon Intl Airport (average of $1,002). Flying from Colorado to Incheon Intl Airport in June is currently the most expensive (average of $1,661). 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

Traveling to a place near Colorado?

Book flights to Colorado if you plan to visit one of these locations
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Alternative routes for Colorado to Incheon Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Colorado to Incheon Intl

Discover the top 8 airlines that operate flights from Colorado to Incheon Intl. 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$54Average$103FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$660Average$1,483FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$755Average$959FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$856Average$1,274FlexibilityNo cancel feeOn-time67%
DeltaCheapest$876Average$1,350FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$877Average$1,372FlexibilityNo cancel feeOn-time71%
Korean AirCheapest$978Average$1,440FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$1,103Average$1,241FlexibilityNo cancel feeOn-time76%
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