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 WestJet ($532), China Eastern ($556), and Air Canada ($629).

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.

What are the most popular airlines that fly from Colorado to Seoul?

Consider American Airlines, Air Canada or Delta when booking your flight. These represent the most popular airlines when flying from Colorado to Seoul.

How far in advance should I book a flight from Colorado to Seoul?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 35 days in advance, which can save you up to 6% on flights from Colorado to Seoul compared to booking the week you need them. Waiting 35 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $826. For sooner than that we have options available in the next 3 days from $906.

What is the cheapest month to fly from Colorado to Seoul?

Flights from Colorado to Seoul lean towards being more expensive in July. Prices are generally better when you fly from Colorado to Seoul in February, with the cheapest ticket starting at $855.

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.

$431+ Flights from Colorado to Seoul

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Cheap flight deals from Colorado to Seoul

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$810 (Kiwi.com)
One-way from	$431 (Kiwi.com)
Popular in	July
Cheapest in	February
Average price	$1,614

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 Seoul (SEL)

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One-way flight from Colorado to Seoul (SEL)

Search Deals

Highest demand for flights based on searches. 26% potential increase in price ($503 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($67 potential savings vs. average RT price).

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Average for round-trip flights in May 2025

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Find 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 May 1, 2025.

Fri 5/2310:16 pmDEN - ICN

1 stop31h 14mMultiple Airlines

Fri 5/306:20 pmICN - DEN

1 stop30h 34mMultiple Airlines

Deal found 4/30

$810

Thu 10/308:35 pmDEN - ICN

1 stop30h 45mTurkish Airlines

Mon 11/310:45 amICN - DEN

1 stop46h 55mTurkish Airlines

Deal found 5/1

$896

Tue 5/67:05 amDEN - ICN

2 stops37h 50mChina Eastern

Thu 5/156:25 pmICN - DEN

2 stops38h 54mChina Eastern

Deal found 4/30

$923

Wed 10/157:52 amDEN - GMP

2 stops22h 33mMultiple Airlines

Sat 10/257:40 amGMP - DEN

2 stops47h 58mMultiple Airlines

Deal found 5/1

$1,342

Tue 9/161:35 pmDEN - GMP

2 stops30h 30mANA

Wed 9/2412:40 pmGMP - DEN

2 stops23h 07mANA

Deal found 4/30

$1,371

Tue 5/276:40 amDEN - GMP

2 stops46h 10mChina Eastern

Tue 6/38:50 pmGMP - DEN

2 stops36h 29mChina Eastern

Deal found 4/30

$1,405

Tue 5/64:43 pmCOS - ICN

2 stops33h 22mQatar Airways

Tue 5/201:20 amICN - COS

2 stops33h 50mQatar Airways

Deal found 4/30

$1,584

Thu 10/305:20 pmDEN - GMP

2 stops28h 45mAir China

Mon 11/32:25 pmGMP - DEN

2 stops33h 55mAir China

Deal found 5/1

$1,586

Sat 7/52:00 pmCOS - ICN

2 stops23h 20mUnited Airlines

Sat 8/164:50 pmICN - COS

2 stops20h 05mUnited Airlines

Deal found 4/30

$1,660

Tue 9/26:05 amDEN - GMP

2 stops24h 45mJapan Airlines

Tue 9/97:55 amGMP - DEN

2 stops18h 26mJapan Airlines

Deal found 5/1

$1,809

Sat 7/58:15 amCOS - ICN

1 stop16h 05mDelta

Sat 8/167:40 pmICN - COS

1 stop17h 48mDelta

Deal found 4/30

$1,916

Tue 5/66:00 amCOS - ICN

1 stop19h 40mMultiple Airlines

Wed 5/219:30 amICN - COS

1 stop25h 40mMultiple Airlines

Deal found 4/30

$2,007

Best flights from Colorado to Seoul
Discover carefully curated flight deals from Colorado to Seoul that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2025.

Fri 5/2310:16 pmDEN - ICN

1 stop31h 14mMultiple Airlines

Fri 5/306:20 pmICN - DEN

1 stop30h 34mMultiple Airlines

Deal found 4/30

$810

Thu 9/257:50 pmDEN - ICN

1 stop30h 50mTurkish Airlines

Sat 10/1811:20 pmICN - DEN

1 stop33h 35mTurkish Airlines

Deal found 4/30

$896

Wed 5/216:40 amDEN - ICN

2 stops41h 40mChina Eastern

Wed 6/118:55 amICN - DEN

2 stops24h 24mChina Eastern

Deal found 4/30

$1,105

Tue 9/27:52 amDEN - ICN

1 stop17h 13mAir Canada

Tue 9/95:45 pmICN - DEN

1 stop16h 38mAir Canada

Deal found 4/30

$1,121

Tue 9/161:35 pmDEN - GMP

2 stops30h 30mANA

Wed 9/2412:40 pmGMP - DEN

2 stops23h 07mANA

Deal found 4/30

$1,371

Sat 7/52:00 pmCOS - ICN

2 stops23h 20mUnited Airlines

Sat 8/164:50 pmICN - COS

2 stops20h 05mUnited Airlines

Deal found 4/30

$1,660

Tue 9/26:05 amDEN - GMP

2 stops24h 45mJapan Airlines

Tue 9/97:55 amGMP - DEN

2 stops18h 26mJapan Airlines

Deal found 5/1

$1,809

Sat 7/58:15 amCOS - ICN

1 stop16h 05mDelta

Sat 8/167:40 pmICN - COS

1 stop17h 48mDelta

Deal found 4/30

$1,916

Sat 7/56:01 amCOS - ICN

2 stops44h 04mQatar Airways

Fri 8/151:20 amICN - COS

2 stops53h 57mQatar Airways

Deal found 4/30

$2,139

Fri 5/235:40 pmDEN - GMP

2 stops29h 30mAir China

Sat 5/318:35 amGMP - DEN

2 stops24h 35mAir China

Deal found 4/30

$2,314

Thu 5/156:00 amCOS - ICN

1 stop18h 30mAmerican Airlines

Thu 5/225:25 pmICN - COS

1 stop21h 20mAmerican Airlines

Deal found 5/1

$2,536

Wed 10/157:52 amDEN - GMP

2 stops22h 33mMultiple Airlines

Sat 10/257:40 amGMP - DEN

2 stops47h 58mMultiple Airlines

Deal found 5/1

$1,342

Last-minute flights from Colorado to Seoul
Discover last-minute flight deals from Colorado to Seoul. Data last updated May 1, 2025 and is based on user searches.

Tue 5/67:05 amDEN - ICN

2 stops37h 50mChina Eastern

Thu 5/156:25 pmICN - DEN

2 stops38h 54mChina Eastern

Deal found 4/30

$923

Tue 5/66:10 amDEN - ICN

1 stop20h 10mDelta

Tue 5/137:20 pmICN - DEN

1 stop17h 27mDelta

Deal found 4/30

$1,406

Tue 5/67:18 pmDEN - ICN

2 stops29h 47mAir Canada

Tue 5/135:45 pmICN - DEN

1 stop16h 38mAir Canada

Deal found 5/1

$1,462

Tue 5/611:59 pmDEN - ICN

2 stops43h 46mEtihad Airways

Wed 5/141:35 amICN - DEN

2 stops60h 24mEtihad Airways

Deal found 4/30

$1,475

Tue 5/64:43 pmCOS - ICN

2 stops33h 22mQatar Airways

Tue 5/201:20 amICN - COS

2 stops33h 50mQatar Airways

Deal found 4/30

$1,584

Tue 5/65:15 pmCOS - ICN

2 stops20h 05mUnited Airlines

Wed 5/214:50 pmICN - COS

2 stops17h 13mUnited Airlines

Deal found 4/30

$1,710

Tue 5/61:30 pmDEN - GMP

2 stops30h 35mANA

Tue 5/1312:40 pmGMP - DEN

2 stops24h 35mANA

Deal found 4/30

$1,853

Tue 5/66:00 amCOS - ICN

1 stop19h 40mMultiple Airlines

Wed 5/219:30 amICN - COS

1 stop25h 40mMultiple Airlines

Deal found 4/30

$2,007

Sat 5/1010:52 pmDEN - ICN

2 stops30h 38mMultiple Airlines

Mon 6/26:20 pmICN - DEN

1 stop30h 52mMultiple Airlines

Deal found 4/30

$858

Sat 5/107:00 amDEN - ICN

2 stops47h 10mCathay Pacific

Wed 6/410:10 amICN - DEN

2 stops40h 07mCathay Pacific

Deal found 4/30

$1,466

Sat 5/106:37 pmDEN - ICN

2 stops33h 23mAlaska Airlines

Fri 5/309:25 pmICN - DEN

2 stops28h 15mAlaska Airlines

Deal found 4/30

$1,682

Sun 5/116:40 amDEN - ICN

2 stops37h 35mChina Airlines

Thu 5/298:35 pmICN - DEN

2 stops30h 04mChina Airlines

Deal found 4/30

$1,869

One-way flights from Colorado to Seoul
Search for one-way flight options from Colorado to Seoul. Find affordable one-way fares based on user searches. Data last updated May 1, 2025.

Sun 8/1010:29 pmDEN - ICN

1 stop31h 01mMultiple Airlines

Deal found 4/29

$431

Thu 8/77:40 pmDEN - ICN

1 stop32h 05mWestJet

Deal found 4/30

$532

Wed 9/176:30 amDEN - ICN

2 stops41h 50mChina Eastern

Deal found 4/30

$556

Wed 9/177:05 pmDEN - ICN

1 stop30h 00mAir Canada

Deal found 4/30

$629

Sun 8/108:25 amDEN - GMP

3 stops46h 05mMultiple Airlines

Deal found 4/29

$703

Thu 8/75:50 pmDEN - ICN

2 stops26h 10mEVA Air

Deal found 4/30

$709

Sat 9/1312:59 amDEN - ICN

1 stop22h 11mDelta

Deal found 4/30

$782

Sun 6/226:05 amDEN - GMP

2 stops37h 55mChina Eastern

Deal found 4/30

$820

Wed 9/1711:30 amDEN - ICN

3 stops37h 05mSingapore Airlines

Deal found 4/30

$863

Wed 9/171:35 pmDEN - GMP

2 stops30h 30mANA

Deal found 4/30

$908

Thu 8/73:40 pmDEN - GMP

2 stops30h 25mAir China

Deal found 4/30

$923

Sun 6/18:20 pmDEN - GMP

2 stops34h 30mJapan Airlines

Deal found 4/29

$1,544

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Fri 5/23

10:16 pm-8:30 pm

1 stop31h 14m

Incheon Intl

Fri 5/30

6:20 pm-9:54 am

1 stop30h 34m

$810

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Thu 9/25

7:50 pm-5:40 pm

1 stop30h 50m

Incheon Intl

Sat 10/18

11:20 pm-5:55 pm

1 stop33h 35m

$896

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Wed 5/21

6:40 am-3:20 pm

2 stops41h 40m

Incheon Intl

Wed 6/11

8:55 am-6:19 pm

2 stops24h 24m

$1,105

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Tue 9/2

7:52 am-4:05 pm

1 stop17h 13m

Incheon Intl

Tue 9/9

5:45 pm-7:23 pm

1 stop16h 38m

$1,121

DenverSeoul

DEN - GMP

DENGMP

Denver Intl

Wed 10/15

7:52 am-9:25 pm

2 stops22h 33m

Seoul Gimpo Intl

Sat 10/25

7:40 am-4:38 pm

2 stops47h 58m

$1,342

DenverSeoul

DEN - GMP

DENGMP

Denver Intl

Tue 9/16

1:35 pm-11:05 am

2 stops30h 30m

Seoul Gimpo Intl

Wed 9/24

12:40 pm-8:47 pm

2 stops23h 07m

$1,371

DenverSeoul

DEN - GMP

DENGMP

Denver Intl

Tue 5/27

6:40 am-7:50 pm

2 stops46h 10m

Seoul Gimpo Intl

Tue 6/3

8:50 pm-6:19 pm

2 stops36h 29m

$1,405

Colorado SpringsIncheon

COS - ICN

COSICN

Colorado Springs

Sat 7/5

2:00 pm-4:20 am

2 stops23h 20m

Incheon Intl

Sat 8/16

4:50 pm-9:55 pm

2 stops20h 05m

$1,660

DenverSeoul

DEN - GMP

DENGMP

Denver Intl

Tue 9/2

6:05 am-9:50 pm

2 stops24h 45m

Seoul Gimpo Intl

Tue 9/9

7:55 am-11:21 am

2 stops18h 26m

$1,809

Colorado SpringsIncheon

COS - ICN

COSICN

Colorado Springs

Sat 7/5

8:15 am-3:20 pm

1 stop16h 05m

Incheon Intl

Sat 8/16

7:40 pm-10:28 pm

1 stop17h 48m

$1,916

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 30 results

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 $1,001). Flying from Colorado to Seoul in December is currently the most expensive (average of $1,635). 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?

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

Rainfall in Seoul by month

In terms of precipitation, rainfall in Seoul ranges from 1.1 - 10.0 inches per month. July is typically the wettest month, when rainfall can reach 10.0 in. December is typically the driest time to visit Seoul when rainfall is around 1.1 in.

Temperature in Seoul by month

If weather is an important factor for your trip to Seoul, 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 35.6 F).

Reviews of airlines servicing Seoul

Peruse reviews from past customers who have flown with EVA Air, Korean Air and Japan Airlines from Colorado to Seoul to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

EVA Air

8.4

Very good

1,186 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Korean Air

8.4

Very good

1,069 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Japan Airlines

8.3

Very good

1,464 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

ANA

8.3

Very good

852 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Singapore Airlines

8.1

Very good

1,292 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Related info for your journey

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 WestJet ($532), China Eastern ($556), and Air Canada ($629).
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 $1,001). Flying from Colorado to Seoul in December is currently the most expensive (average of $1,635). 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 Seoul

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Incheon Intl Airport to Kota Kinabalu flights

Incheon Intl Airport to Cebu City flights

Top 9 airlines flying from Colorado to Seoul

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$54	Average$142	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$660	Average$1,459	FlexibilityNo cancel fee	On-time69%
WestJet	Cheapest$748	Average$1,171	FlexibilityNo cancel fee	On-time60%
Turkish Airlines	Cheapest$755	Average$901	FlexibilityNo cancel fee	On-time77%
Korean Air	Cheapest$853	Average$1,631	FlexibilityNo cancel fee	On-time81%
Air Canada	Cheapest$856	Average$1,293	FlexibilityNo cancel fee	On-time67%
Delta	Cheapest$876	Average$1,350	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$877	Average$1,372	FlexibilityNo cancel fee	On-time71%
Asiana Airlines	Cheapest$1,088	Average$1,242	FlexibilityNo cancel fee	On-time76%

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$431+ 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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Colorado to Seoul

Keep the following information in mind while searching for Colorado to Seoul flight deals. Data was last updated May 1, 2025.

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Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Colorado to Seoul

Cheapest flights from Colorado to SeoulExplore 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 May 1, 2025.

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 May 1, 2025.

Cheapflights Fare Finder

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

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.

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?

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 May 1, 2025.

Rainfall in Seoul by month

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

Temperature in Seoul by month

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

Reviews of airlines servicing Seoul

Get insights into the airlines that provide service to Seoul. 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 Seoul. Reviews last updated May 1, 2025.

Peruse reviews from past customers who have flown with EVA Air, Korean Air and Japan Airlines from Colorado to Seoul to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

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

What are the most popular routes from Colorado to Seoul?

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

How can I find direct flights from Colorado to Seoul?

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

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

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 Colorado to Seoul

See prices for flight routes from nearby airports that may be better suited for you.

Top 9 airlines flying from Colorado to Seoul

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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 May 1, 2025.