South Korea

$397+ Cheap flights from Colorado to South Korea

DEN — ICN
Dec 4 — Dec 111
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Cheap flight deals from Colorado to South Korea

Cheapest flights from Colorado to South Korea

Wed 12/21:54 pm -
1 stop22h 56m
Wed 12/91:20 pm -
1 stop18h 33m
Deal found 11/3$762
Tue 12/19:20 am -
1 stop39h 00m
Tue 12/81:20 pm -
1 stop18h 33m
Deal found 11/3$803
Sat 12/510:06 am -
1 stop19h 14m
Sat 12/197:45 pm -
1 stop21h 18m
Deal found 10/30$805
Sat 11/287:46 am -
1 stop21h 34m
Sat 12/57:45 pm -
1 stop20h 23m
Deal found 10/30$862
Thu 12/310:57 pm -
1 stop30h 23m
Thu 12/101:10 pm -
2 stops36h 21m
Deal found 10/30$863
Tue 12/15:34 am -
1 stop19h 11m
Tue 12/86:50 pm -
1 stop19h 58m
Deal found 11/2$1,064
Tue 11/241:16 pm -
1 stop35h 04m
Sat 12/56:40 pm -
1 stop33h 56m
Deal found 11/1$1,120
Tue 11/241:16 pm -
2 stops36h 29m
Fri 12/116:45 pm -
2 stops33h 51m
Deal found 11/1$1,131
Tue 11/241:16 pm -
2 stops36h 29m
Thu 12/106:45 pm -
2 stops57h 51m
Deal found 11/1$1,138
Mon 11/305:34 am -
1 stop19h 11m
Mon 12/76:50 pm -
1 stop20h 11m
Deal found 11/2$1,204
Wed 11/410:20 am -
1 stop38h 25m
Thu 11/196:50 pm -
1 stop21h 06m
Deal found 11/2$1,210
Wed 11/251:16 pm -
1 stop35h 04m
Fri 12/116:40 pm -
1 stop33h 56m
Deal found 11/1$1,220

Find flight deals from Colorado to South Korea

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$762
(Trip.com)

One-way from

$397
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$1,287
Provider with most accurate pricing for Denver Intl-Seoul (SEL) flight deals.
Provider most trusted by Cheapflights users for Denver Intl-Seoul (SEL) flights.
From Colorado to South Korea
One-way flight from Colorado to South Korea
Highest demand for flights based on searches. 11% potential increase in price ($187 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($52 potential savings vs. average RT price).
Average for round-trip flights in November 2026

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Colorado to South Korea that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Tue 1/12

10:29 pm-11:55 am

3 stops45h 26m

Incheon Intl

Wed 12/31

12:00 am-8:00 am

Nonstop0h 00m

$397

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Tue 11/24

2:20 pm-4:20 pm

1 stop34h 00m

Incheon Intl

Wed 12/31

12:00 am-8:00 am

Nonstop0h 00m

$482

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Wed 11/25

10:50 pm-12:40 am

3 stops33h 50m

Incheon Intl

Wed 12/31

12:00 am-8:00 am

Nonstop0h 00m

$544

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Wed 1/20

7:20 am-3:20 pm

2 stops40h 00m

Incheon Intl

Wed 12/31

12:00 am-8:00 am

Nonstop0h 00m

$546

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Wed 1/20

6:15 am-12:40 am

2 stops26h 25m

Incheon Intl

Wed 12/31

12:00 am-8:00 am

Nonstop0h 00m

$566

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Sat 11/28

7:05 am-8:45 pm

2 stops45h 40m

Incheon Intl

Wed 12/31

12:00 am-8:00 am

Nonstop0h 00m

$579

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Fri 4/2

6:30 am-3:20 pm

2 stops41h 50m

Incheon Intl

Wed 12/31

12:00 am-8:00 am

Nonstop0h 00m

$586

DenverIncheon

DEN Denver Intl - ICN Incheon Intl

DENICN

Denver Intl

Wed 11/11

9:15 am-12:45 pm

3 stops35h 30m

Incheon Intl

Wed 12/31

12:00 am-8:00 am

Nonstop0h 00m

$614

DenverBusan

DEN Denver Intl - PUS Busan Gimhae

DENPUS

Denver Intl

Fri 2/12

10:29 pm-1:10 pm

2 stops46h 41m

Busan Gimhae

Wed 12/31

12:00 am-8:00 am

Nonstop0h 00m

$621

DenverSeoul

DEN Denver Intl - GMP Seoul Gimpo Intl

DENGMP

Denver Intl

Fri 2/26

2:22 pm-2:10 pm

3 stops55h 48m

Seoul Gimpo Intl

Wed 12/31

12:00 am-8:00 am

Nonstop0h 00m

$641

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Colorado to South Korea

Have a flexible travel schedule? Discover the best time to fly to South Korea from Colorado with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Colorado to South Korea

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

Currently, February is the cheapest month in which you can book a flight from Colorado to South Korea (average of $1,076). Flying from Colorado to South Korea in December is currently the most expensive (average of $1,735). 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.

How far ahead should I book a flight from Colorado to South Korea?

The best time to book flights from Colorado to South Korea is 17 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Related info for your journey

  • How long is the flight from Colorado to South Korea?

    There are many flights that can get you from Colorado to South Korea in 19h 11m. Fly via American Airlines, Cathay Pacific, or Turkish Airlines to get the fastest option. Colorado and South Korea are separated by a distance of 6242 mi. This flight may include one or multiple stops.

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

    For one-way options, check prices for WestJet. According to our data, you can fly for as low as $366. Users have also found prices from $482 and $647 on Air Canada and Asiana Airlines, respectively.

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

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

  • How can I find direct flights from Colorado to South Korea?

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

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

    Yes. Cheapflights offers flight deals from Colorado to South Korea 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 South Korea?

    Currently, February is the cheapest month in which you can book a flight from Colorado to South Korea (average of $1,076). Flying from Colorado to South Korea in December is currently the most expensive (average of $1,735). 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

Alternative routes for Colorado to South Korea

Top 8 airlines flying from Colorado to South Korea

AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$428Average$1,634FlexibilityNo cancel feeOn-time69%
DeltaCheapest$483Average$1,456FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$519Average$1,662FlexibilityNo cancel feeOn-time81%
American AirlinesCheapest$816Average$1,317FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$843Average$1,243FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$999Average$1,337FlexibilityNo cancel feeOn-time76%
WestJetCheapest$1,157Average$1,522FlexibilityNo cancel feeOn-time60%
China EasternCheapest$1,186Average$1,754FlexibilityNo cancel feeOn-time62%

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