Seoul

$496+ 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SEL
May 10 — May 171
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1. Tell us where you want to go

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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 April 10, 2026.

This Fareboom deal was found by Cheapflights users on 4/8. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/143:15 pm
DEN
-
ICN
2 stops35h 25m
Multiple Airlines
Thu 10/18:45 pm
ICN
-
DEN
1 stop29h 35m
Multiple Airlines
Deal found 4/8$994
This Justfly.com deal was found by Cheapflights users on 4/9. 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 9/136:30 am
DEN
-
ICN
2 stops38h 25m
China Eastern
Sat 10/104:20 pm
ICN
-
DEN
2 stops40h 50m
China Eastern
Deal found 4/9$997
This Justfly.com deal was found by Cheapflights users on 4/5. 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 11/111:21 am
DEN
-
ICN
2 stops37h 49m
Air Canada
Mon 11/306:55 pm
ICN
-
DEN
2 stops39h 09m
Air Canada
Deal found 4/5$1,001
This FlightHub deal was found by Cheapflights users on 4/5. 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 10/278:05 am
DEN
-
ICN
1 stop17h 05m
Air Canada
Thu 12/36:55 pm
ICN
-
DEN
2 stops39h 09m
Air Canada
Deal found 4/5$1,010
This Air Canada deal was found by Cheapflights users on 4/6. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:05 pm
DEN
-
ICN
1 stop30h 05m
Air Canada
Wed 12/96:55 pm
ICN
-
DEN
1 stop14h 49m
Air Canada
Deal found 4/6$1,025
This Expedia deal was found by Cheapflights users on 4/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/56:10 pm
DEN
-
ICN
2 stops30h 55m
Air Canada
Thu 10/295:55 pm
ICN
-
DEN
1 stop14h 49m
Air Canada
Deal found 4/8$1,032
This FlightHub deal was found by Cheapflights users on 4/8. 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 5/129:10 am
DEN
-
ICN
1 stop15h 55m
Air Canada
Wed 6/175:45 pm
ICN
-
DEN
1 stop14h 15m
Air Canada
Deal found 4/8$1,034
This FlightHub deal was found by Cheapflights users on 4/8. 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.
Wed 5/139:10 am
DEN
-
ICN
1 stop15h 55m
Air Canada
Wed 6/106:00 pm
ICN
-
DEN
1 stop40h 00m
Air Canada
Deal found 4/8$1,037
This KAYAK deal was found by Cheapflights users on 4/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:25 am
DEN
-
GMP
2 stops36h 35m
China Eastern
Mon 5/118:50 pm
GMP
-
DEN
2 stops35h 45m
China Eastern
Deal found 4/9$1,062
This Justfly.com deal was found by Cheapflights users on 4/9. 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.
Thu 4/307:25 am
DEN
-
GMP
2 stops36h 35m
China Eastern
Sun 5/108:50 pm
GMP
-
DEN
2 stops35h 45m
China Eastern
Deal found 4/9$1,241
This China Eastern deal was found by Cheapflights users on 4/5. 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 China Eastern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:30 am
DEN
-
GMP
2 stops37h 30m
China Eastern
Thu 10/18:50 pm
GMP
-
DEN
2 stops36h 20m
China Eastern
Deal found 4/5$1,307
This KAYAK deal was found by Cheapflights users on 4/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/297:25 am
DEN
-
GMP
2 stops45h 25m
China Eastern
Sun 5/108:50 pm
GMP
-
DEN
2 stops35h 45m
China Eastern
Deal found 4/9$1,317

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 April 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$994
(Fareboom)

One-way from

$496
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,142
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 Denver Intl to Seoul (SEL)
One-way flight from Denver Intl to Seoul (SEL)
Highest demand for flights based on searches. 5% potential increase in price ($74 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($50 potential savings vs. average RT price).
Average for round-trip flights in April 2026

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 April 10, 2026.
Use the filters below to find and compare flights from Denver to Seoul that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Mon 8/31

7:28 pm-11:30 am

2 stops25h 02m

Incheon Intl

Sun 9/6

12:45 pm-7:50 pm

2 stops22h 05m

$1,204

DenverSeoul

DEN - GMP

DENGMP

Denver Intl

Wed 9/2

6:30 am-11:00 am

2 stops37h 30m

Seoul Gimpo Intl

Thu 10/1

8:50 pm-6:10 pm

2 stops36h 20m

$1,307

DenverSeoul

DEN - GMP

DENGMP

Denver Intl

Wed 5/6

7:25 am-11:00 am

2 stops36h 35m

Seoul Gimpo Intl

Wed 5/20

8:50 pm-5:35 pm

2 stops35h 45m

$1,317

DenverSeoul

DEN - GMP

DENGMP

Denver Intl

Tue 5/5

7:25 am-7:50 pm

2 stops45h 25m

Seoul Gimpo Intl

Tue 5/12

8:50 pm-5:35 pm

2 stops35h 45m

$1,317

DenverSeoul

DEN - GMP

DENGMP

Denver Intl

Tue 9/1

6:00 am-9:15 pm

2 stops24h 15m

Seoul Gimpo Intl

Wed 9/9

12:05 pm-11:07 pm

2 stops26h 02m

$1,374

DenverSeoul

DEN - GMP

DENGMP

Denver Intl

Mon 9/14

6:00 am-9:15 pm

2 stops24h 15m

Seoul Gimpo Intl

Thu 10/1

12:05 pm-5:30 pm

2 stops20h 25m

$1,384

DenverSeoul

DEN - GMP

DENGMP

Denver Intl

Mon 10/5

7:32 am-9:15 pm

2 stops22h 43m

Seoul Gimpo Intl

Thu 10/29

12:05 pm-5:49 pm

2 stops20h 44m

$1,407

DenverSeoul

DEN - GMP

DENGMP

Denver Intl

Mon 4/27

7:36 am-9:15 pm

2 stops22h 39m

Seoul Gimpo Intl

Thu 5/14

8:00 am-5:48 pm

2 stops24h 48m

$1,422

DenverSeoul

DEN - GMP

DENGMP

Denver Intl

Mon 8/31

6:00 am-9:15 pm

2 stops24h 15m

Seoul Gimpo Intl

Sun 9/6

12:05 pm-11:09 pm

2 stops26h 04m

$1,452

DenverIncheon

DEN - ICN

DENICN

Denver Intl

Thu 4/30

12:25 pm-5:30 pm

2 stops38h 05m

Incheon Intl

Wed 5/13

11:45 pm-11:39 pm

2 stops38h 54m

$1,460

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/4

Showing 1-10 of 43 resultsSorted by cheapest first
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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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
OvagoPrice Accuracy2 starsTrust Score*3 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Seoul flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 April 3, 2026.

Booking 26 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 $139). Flying from Denver to Seoul in June is currently the most expensive (average of $1,003). 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 much does it cost to fly round-trip from Denver to Seoul?

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 April 10, 2026.
Get a feel of what it's like to fly with Korean Air,Asiana Airlines, andDelta 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.

Overall

8.4

Boarding

8.5

Food

8.1

Crew

8.7

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.

Overall

8.4

Boarding

8.5

Food

8.1

Crew

8.7

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.

Overall

8.4

Boarding

8.5

Food

8.1

Crew

8.7

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.

Overall

8.4

Boarding

8.5

Food

8.1

Crew

8.7

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.

Overall

8.4

Boarding

8.5

Food

8.1

Crew

8.7

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.

Overall

8.4

Boarding

8.5

Food

8.1

Crew

8.7

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. 8 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?

    China Eastern, Japan Airlines, and United Airlines can get you from Denver to Seoul in just under 18h 40m. Your travel time can differ by up to 27h 40m. 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?

    United Airlines, at $169, was found to be the cheapest airline from Denver to Seoul.Alternate airlines to your destination round-trip include Delta and Korean Air. You may be able to fly from Denver to Seoul for 86% 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 Air Canada. According to our data, you can fly for as low as $528. Users have also found prices from $577 and $656 on Asiana Airlines and United 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 $139). Flying from Denver to Seoul in June is currently the most expensive (average of $1,003). 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.

Top 8 airlines flying from Denver to Seoul

Discover the top 8 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 April 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$169Average$1,670FlexibilityNo cancel feeOn-time69%
DeltaCheapest$474Average$976FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$522Average$1,089FlexibilityNo cancel feeOn-time81%
AIR PREMIACheapest$585Average$616FlexibilityNo cancel feeOn-timeN/A
Asiana AirlinesCheapest$741Average$1,219FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$816Average$976FlexibilityNo cancel feeOn-time71%
Turkish AirlinesCheapest$878Average$1,078FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$906Average$1,167FlexibilityNo cancel feeOn-time67%

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