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$331+ Cheap flights from Denver (DEN) 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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SEL
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Denver Intl to Seoul are usually found in September or February, booked 34 days in advance, depart on a Wednesday or Tuesday and return on a Monday

Cheap flight deals from Denver to Seoul

Cheapest flights from Denver to Seoul
Explore the most affordable flight options available from Denver to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

This Delta deal was found by Cheapflights users on 12/4. 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.
Thu 12/47:05 amDEN - ICN
1 stop17h 15mDelta
Tue 12/238:05 pmICN - DEN
1 stop19h 18mDelta
Deal found 12/4$906
This Delta deal was found by Cheapflights users on 12/4. 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 12/95:45 amDEN - ICN
1 stop17h 45mDelta
Sun 12/218:05 pmICN - DEN
2 stops18h 51mDelta
Deal found 12/4$910
This Delta deal was found by Cheapflights users on 12/4. 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.
Wed 12/103:54 pmDEN - ICN
1 stop32h 26mDelta
Wed 12/246:00 pmICN - DEN
1 stop19h 45mDelta
Deal found 12/4$911
This Delta deal was found by Cheapflights users on 12/4. 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.
Wed 12/103:54 pmDEN - ICN
1 stop32h 26mDelta
Thu 12/258:05 pmICN - DEN
2 stops30h 55mDelta
Deal found 12/4$916
This Delta deal was found by Cheapflights users on 12/3. 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.
Wed 12/107:45 pmDEN - ICN
1 stop28h 45mDelta
Tue 12/238:05 pmICN - DEN
2 stops18h 51mDelta
Deal found 12/3$917
This Delta deal was found by Cheapflights users on 12/3. 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.
Wed 12/36:22 pmDEN - ICN
2 stops30h 08mDelta
Mon 12/228:05 pmICN - DEN
2 stops18h 51mDelta
Deal found 12/3$920
This FlightHub deal was found by Cheapflights users on 12/1. 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.
Thu 12/47:20 pmDEN - ICN
1 stop31h 00mTurkish Airlines
Wed 12/1010:45 amICN - DEN
1 stop46h 50mTurkish Airlines
Deal found 12/1$923
This Kiwi.com deal was found by Cheapflights users on 12/1. 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.
Thu 12/46:00 amDEN - ICN
2 stops42h 20mMultiple Airlines
Wed 12/1010:20 pmICN - DEN
1 stop27h 52mMultiple Airlines
Deal found 12/1$937
This Kiwi.com deal was found by Cheapflights users on 12/1. 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 12/56:00 amDEN - ICN
1 stop31h 10mMultiple Airlines
Sun 12/79:20 pmICN - DEN
2 stops42h 57mMultiple Airlines
Deal found 12/1$977
This Kiwi.com deal was found by Cheapflights users on 12/3. 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 12/89:42 amDEN - ICN
1 stop27h 58mMultiple Airlines
Wed 12/241:40 pmICN - DEN
2 stops45h 51mMultiple Airlines
Deal found 12/3$1,020
This Ovago deal was found by Cheapflights users on 12/3. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/67:46 amDEN - GMP
2 stops38h 24mAir China
Wed 12/178:50 amGMP - DEN
2 stops25h 35mAir China
Deal found 12/3$1,765
This Travelocity deal was found by Cheapflights users on 12/1. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:22 amDEN - GMP
2 stops43h 08mMultiple Airlines
Wed 1/72:25 pmGMP - DEN
2 stops38h 01mMultiple Airlines
Deal found 12/1$2,053

Find flight deals from Denver to Seoul

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Seoul (SEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$743
(Gurufare)

One-way from

$331
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$1,340
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 Denver Intl to Seoul (SEL)
Search Deals
One-way flight from Denver Intl to Seoul (SEL)
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($272 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($34 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 Denver 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 4, 2025.
Use the filters below to find and compare flights from Denver to Seoul that are best for you.

Fly from

Denver

Fly to

Seoul

Route

Depart

Return

Price

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Wed 1/14

6:29 am-4:30 pm

1 stop18h 01m

Incheon Intl

Sun 1/25

7:30 pm-8:05 pm

1 stop16h 35m

$906

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Thu 1/22

6:29 am-4:30 pm

1 stop18h 01m

Incheon Intl

Tue 1/27

7:40 pm-8:07 pm

1 stop16h 27m

$906

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Tue 2/24

6:40 am-4:30 pm

1 stop17h 50m

Incheon Intl

Tue 3/10

7:40 pm-8:00 pm

1 stop15h 20m

$906

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Mon 2/16

3:59 pm-4:30 pm

2 stops32h 31m

Incheon Intl

Wed 2/25

8:05 pm-9:24 am

2 stops29h 19m

$910

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Tue 2/3

6:23 pm-4:30 pm

2 stops30h 07m

Incheon Intl

Fri 2/13

8:05 pm-10:27 pm

2 stops18h 22m

$910

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Sun 1/18

6:23 pm-4:30 pm

2 stops30h 07m

Incheon Intl

Sun 1/25

8:05 pm-9:38 am

2 stops29h 33m

$910

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Tue 1/13

7:20 pm-6:20 pm

1 stop31h 00m

Incheon Intl

Mon 2/9

12:10 am-5:35 pm

1 stop33h 25m

$979

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Sat 1/24

7:20 pm-6:20 pm

1 stop31h 00m

Incheon Intl

Wed 1/28

10:45 am-5:35 pm

1 stop46h 50m

$1,021

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Wed 3/25

8:20 am-8:30 pm

2 stops21h 10m

Incheon Intl

Mon 4/6

8:35 pm-11:33 pm

1 stop17h 58m

$1,114

DenverSeoul

DEN - GMP

DENGMP

Denver Intl

Thu 1/8

1:52 pm-1:05 pm

2 stops31h 13m

Seoul Gimpo Intl

Thu 1/15

2:25 pm-8:28 am

2 stops34h 03m

$1,460

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/1

Showing 1-10 of 37 results
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Compare providers for flights from Denver to Seoul

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Seoul in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Denver-Seoul flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Denver-Seoul flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Denver-Seoul flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-Seoul flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Seoul flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Denver to Seoul

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

How far ahead should I book a flight from Denver to Seoul?

Use this chart to determine the optimal time to book a round-trip flight from Denver to Seoul. Price data was last updated on November 28, 2025.

Booking 34 days in advance of your planned departure date is, on average, the best time to get cheap flights from Denver to Seoul. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, February is the cheapest month in which you can book a flight from Denver to Seoul (average of $103). Flying from Denver to Seoul in June is currently the most expensive (average of $1,458). 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 DEN to SEL?

Find hourly flight availability from Denver 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 4, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 49% on flights from Denver to Seoul by exploring options for tickets in the afternoon.

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 December 4, 2025.
Get a feel of what it's like to fly with Korean Air, Asiana Airlines, and Delta from Denver to Seoul by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,179 reviews

Food

8.1

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Comfort

8.3

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
1,179 reviews
Korean Air
8.4
Very good
1,179 reviews

Food

8.1

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Comfort

8.3

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.
Asiana Airlines
8.2
Very good
490 reviews
Korean Air
8.4
Very good
1,179 reviews

Food

8.1

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Comfort

8.3

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
7.9
Good
8,011 reviews
Korean Air
8.4
Very good
1,179 reviews

Food

8.1

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Comfort

8.3

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.
United Airlines
7.4
Good
9,066 reviews
Korean Air
8.4
Very good
1,179 reviews

Food

8.1

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Comfort

8.3

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.
Air Canada
7.1
Good
10,500 reviews
Korean Air
8.4
Very good
1,179 reviews

Food

8.1

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Comfort

8.3

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 Denver to Seoul. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Denver to Seoul?

    Denver Intl (DEN), located 18.5 mi from the city center, is the airport you fly out of when you book flights from Denver to Seoul. 10 airlines have flights from Denver Intl to Seoul on a regular basis. Booking flights from Denver Intl to Seoul should not be difficult; the airport handles an average of 0 outbound flights to Seoul per day.

  • How long is the flight from Denver to Seoul?

    Delta, Air China, and Japan Airlines can get you from Denver to Seoul in just under 18h 01m. Your travel time can differ by up to 16h. Airlines will cover a distance of 6186 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Denver to Seoul round-trip?

    Frontier, at $54, was found to be the cheapest airline from Denver to Seoul.Alternate airlines to your destination round-trip include United Airlines and Delta. You may be able to fly from Denver to Seoul for 95% less than the average price by searching for these airlines.

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

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $469. Users have also found prices from $551 and $553 on Air Canada and Asiana Airlines, respectively.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Denver to Seoul (average of $103). Flying from Denver to Seoul in June is currently the most expensive (average of $1,458). 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

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Alternative routes for Denver to Seoul

See prices for flight routes from nearby airports that may be better suited for you.
Denver to Incheon Intl flights
Denver to Gimpo Intl flights
Colorado Springs to Incheon Intl flights
Denver to Busan flights
Denver to Cheongju flights

Top 10 airlines flying from Denver to Seoul

Discover the top 10 airlines that operate flights from Denver 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 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$54Average$129FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$187Average$660FlexibilityNo cancel feeOn-time69%
AIR PREMIACheapest$585Average$615FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$587Average$1,160FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$748Average$1,213FlexibilityNo cancel feeOn-time60%
Turkish AirlinesCheapest$755Average$897FlexibilityNo cancel feeOn-time77%
Asiana AirlinesCheapest$757Average$1,251FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$841Average$1,568FlexibilityNo cancel feeOn-time81%
American AirlinesCheapest$877Average$1,077FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$971Average$1,226FlexibilityNo cancel feeOn-time67%

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