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$381+ Cheap flights from Colorado to Seoul (SEL)

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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SEL
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Colorado to Seoul

Cheapest flights from Colorado to Seoul
Explore the most affordable flight options available from Colorado to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/16. 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.
Tue 12/301:10 pmDEN - ICN
1 stop39h 20mMultiple Airlines
Wed 1/78:20 pmICN - DEN
2 stops33h 42mMultiple Airlines
Deal found 12/16$1,393
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/309:23 amCOS - ICN
2 stops28h 17mUnited Airlines
Wed 1/76:00 pmICN - COS
2 stops34h 22mUnited Airlines
Deal found 12/16$1,421
This Kiwi.com deal was found by Cheapflights users on 12/16. 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.
Tue 12/301:10 pmDEN - ICN
1 stop39h 20mMultiple Airlines
Thu 1/81:20 pmICN - DEN
1 stop22h 44mMultiple Airlines
Deal found 12/16$1,443
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/296:35 amDEN - ICN
2 stops30h 45mMultiple Airlines
Thu 1/81:20 pmICN - DEN
1 stop22h 44mMultiple Airlines
Deal found 12/16$1,489
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/2910:16 amDEN - ICN
1 stop27h 04mMultiple Airlines
Sat 1/1010:50 pmICN - DEN
2 stops56h 34mMultiple Airlines
Deal found 12/16$1,526
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/2910:16 amDEN - ICN
1 stop27h 04mMultiple Airlines
Wed 1/78:20 pmICN - DEN
2 stops37h 26mMultiple Airlines
Deal found 12/16$1,545
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/286:00 amDEN - ICN
1 stop31h 10mMultiple Airlines
Wed 1/78:20 pmICN - DEN
2 stops37h 26mMultiple Airlines
Deal found 12/16$1,548
This Kiwi.com deal was found by Cheapflights users on 12/16. 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.
Tue 12/301:10 pmDEN - ICN
1 stop39h 20mMultiple Airlines
Tue 1/610:50 pmICN - DEN
2 stops28h 48mMultiple Airlines
Deal found 12/16$1,565
This Kiwi.com deal was found by Cheapflights users on 12/16. 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.
Wed 12/3112:00 pmDEN - ICN
2 stops25h 10mMultiple Airlines
Thu 1/81:20 pmICN - DEN
1 stop22h 44mMultiple Airlines
Deal found 12/16$1,578
This Kiwi.com deal was found by Cheapflights users on 12/16. 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.
Wed 12/179:33 amDEN - ICN
2 stops44h 02mMultiple Airlines
Sun 2/86:55 pmICN - DEN
1 stop31h 07mMultiple Airlines
Deal found 12/16$1,591
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/309:23 amCOS - ICN
2 stops28h 17mUnited Airlines
Thu 1/86:00 pmICN - COS
2 stops19h 58mUnited Airlines
Deal found 12/16$1,615
This United Airlines deal was found by Cheapflights users on 12/15. 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 12/2312:09 pmCOS - ICN
2 stops25h 31mUnited Airlines
Sat 12/2712:45 pmICN - COS
2 stops22h 10mUnited Airlines
Deal found 12/15$1,710

Find flight deals from Colorado to Seoul

Keep the following information in mind while searching for Colorado to Seoul flight deals. Data was last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$773
(Kiwi.com)

One-way from

$381
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,888
Provider with most accurate pricing for Denver Intl-Seoul (SEL) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Seoul (SEL) flights.
Search Deals
From Colorado to Seoul (SEL)
Search Deals
One-way flight from Colorado to Seoul (SEL)
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($152 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($52 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado to Seoul 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 December 18, 2025.
Use the filters below to find and compare flights from Colorado to Seoul that are best for you.

Fly from

Colorado

Fly to

Seoul

Route

Depart

Return

Price

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Fri 1/23

3:06 pm-6:35 pm

2 stops35h 29m

Incheon Intl

Mon 2/2

6:55 pm-10:36 am

1 stop31h 41m

$773

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Fri 1/16

9:12 pm-6:35 pm

2 stops29h 23m

Incheon Intl

Fri 1/23

6:55 pm-10:36 am

1 stop31h 41m

$806

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Fri 1/30

10:29 pm-8:30 pm

1 stop30h 01m

Incheon Intl

Fri 2/6

6:55 pm-10:36 am

1 stop31h 41m

$850

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Tue 2/17

8:00 pm-8:30 pm

1 stop32h 30m

Incheon Intl

Sat 2/28

9:20 pm-6:05 pm

2 stops36h 45m

$874

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Sat 1/17

7:20 pm-6:20 pm

1 stop31h 00m

Incheon Intl

Mon 1/26

12:10 am-5:35 pm

1 stop33h 25m

$907

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Thu 3/5

7:20 pm-6:20 pm

1 stop31h 00m

Incheon Intl

Fri 3/13

10:45 am-6:35 pm

1 stop46h 50m

$907

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Thu 1/15

7:20 pm-6:20 pm

1 stop31h 00m

Incheon Intl

Wed 1/21

12:10 am-5:35 pm

1 stop33h 25m

$907

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Mon 1/12

6:10 am-8:30 pm

1 stop22h 20m

Incheon Intl

Mon 1/26

6:55 pm-10:59 pm

2 stops20h 04m

$907

Colorado SpringsIncheon

COS - ICN

COSICN

Colorado Springs

Fri 1/23

8:40 am-5:40 am

2 stops29h 00m

Incheon Intl

Tue 1/27

6:00 pm-8:05 pm

2 stops18h 05m

$920

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Sat 1/17

9:20 pm-8:30 pm

2 stops31h 10m

Incheon Intl

Mon 1/26

6:55 pm-10:36 am

1 stop31h 41m

$929

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 46 results
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Best time to book a flight from Colorado to Seoul

Have a flexible travel schedule? Discover the best time to fly to Seoul 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 Seoul

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

Currently, February is the cheapest month in which you can book a flight from Colorado to Seoul (average of $103). Flying from Colorado to Seoul in June is currently the most expensive (average of $1,515). 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 SEL?

Find hourly flight availability from Colorado to Seoul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

One of the essential ways to save on airfare from Colorado to Seoul is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 29% on airfare.

Related info for your journey

Find useful and relevant information for your journey from Colorado to Seoul. 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 Colorado to Seoul?

    Departing from Colorado to Seoul will take you 29h. The distance from Colorado to Seoul is about 6242 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Colorado to Seoul one-way?

    The cheapest airlines for a one-way flight from Colorado to Seoul are Delta ($469), Air Canada ($551), and Asiana Airlines ($553).

  • What are the most popular routes from Colorado to Seoul?

    The most popular route from Colorado to Seoul is Denver Intl - Incheon Intl. You may also consider Denver Intl - Seoul Gimpo Intl or Colorado Springs - Incheon Intl.

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

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

  • How can I find direct flights from Colorado to Seoul?

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

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

    Yes. Cheapflights offers flight deals from Colorado to Seoul 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 Seoul?

    Currently, February is the cheapest month in which you can book a flight from Colorado to Seoul (average of $103). Flying from Colorado to Seoul in June is currently the most expensive (average of $1,515). 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

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Alternative routes for Colorado to Seoul

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Colorado to Seoul

Discover the top 10 airlines that operate flights from Colorado to Seoul. 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$54Average$129FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$187Average$1,096FlexibilityNo cancel feeOn-time69%
DeltaCheapest$478Average$1,099FlexibilityNo cancel feeOn-timeN/A
AIR PREMIACheapest$585Average$615FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$748Average$1,213FlexibilityNo cancel feeOn-time60%
Turkish AirlinesCheapest$755Average$936FlexibilityNo cancel feeOn-time77%
Asiana AirlinesCheapest$757Average$1,254FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$838Average$1,601FlexibilityNo cancel feeOn-time81%
American AirlinesCheapest$877Average$1,102FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$975Average$1,225FlexibilityNo cancel feeOn-time67%

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