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$363+ Cheap flights from Incheon Intl (ICN) to Denver (DEN)

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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — DEN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Incheon Intl to Denver Intl are usually found in August or November, booked 39 days in advance, depart on a Sunday or Thursday and return on a Wednesday

Cheap flight deals from Incheon Intl to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Incheon Intl (ICN) to Denver (DEN). 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 September 11, 2025.

Round-trip from

$519
(United Airlines)

One-way from

$363
(Trip.com)

Popular in

January

Cheapest in

August

Average price

$1,282
From Incheon Intl to Denver Intl
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One-way flight from Incheon Intl to Denver Intl
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Highest demand for flights based on searches. 8% potential increase in price ($101 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Incheon Intl to Denver

Cheapest flights from Incheon Intl to Denver
Explore the most affordable flight options available from Incheon Intl to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/268:35 pmICN - DEN
2 stops29h 00mAlaska Airlines
Thu 10/307:19 pmDEN - ICN
2 stops32h 16mAlaska Airlines
Deal found 9/11$523
This Alaska Airlines deal was found by Cheapflights users on 9/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/118:35 pmICN - DEN
2 stops38h 49mAlaska Airlines
Mon 1/127:04 pmDEN - ICN
2 stops55h 31mAlaska Airlines
Deal found 9/11$541
This Trip.com deal was found by Cheapflights users on 9/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/258:35 pmICN - DEN
1 stop19h 00mMultiple Airlines
Sat 11/110:00 amDEN - ICN
1 stop17h 35mMultiple Airlines
Deal found 9/10$545
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/178:35 pmICN - DEN
1 stop19h 00mMultiple Airlines
Wed 10/2910:00 amDEN - ICN
1 stop17h 35mMultiple Airlines
Deal found 9/10$575
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 10/268:35 pmICN - DEN
1 stop19h 00mMultiple Airlines
Thu 10/3010:00 amDEN - ICN
1 stop17h 35mMultiple Airlines
Deal found 9/11$598
This Gotogate deal was found by Cheapflights users on 9/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:00 pmICN - DEN
1 stop39h 18mAir Canada
Wed 9/249:40 amDEN - ICN
1 stop39h 35mAir Canada
Deal found 9/10$634
This Delta deal was found by Cheapflights users on 9/11. 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 10/77:40 pmICN - DEN
1 stop28h 49mDelta
Tue 10/286:05 amDEN - ICN
1 stop18h 25mDelta
Deal found 9/11$636
This Delta deal was found by Cheapflights users on 9/11. 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.
Fri 10/107:20 pmICN - DEN
2 stops29h 09mDelta
Mon 11/36:23 pmDEN - ICN
2 stops30h 07mDelta
Deal found 9/11$637
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/75:45 pmICN - DEN
2 stops29h 54mAmerican Airlines
Tue 10/2811:59 pmDEN - ICN
2 stops24h 56mAmerican Airlines
Deal found 9/11$705

Cheapflights Fare Finder

 
Customize your flight search to find flights from Incheon Intl to Denver 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 September 11, 2025.
Use the filters below to find and compare flights from Incheon Intl Airport to Denver that are best for you.

Fly from

Incheon Intl

Fly to

Denver

Route

Depart

Return

Price

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Mon 2/2

6:00 pm-8:28 am

2 stops30h 28m

Denver Intl

Wed 2/4

7:47 am-5:40 am

1 stop29h 53m

$519

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Sun 10/26

8:35 pm-10:35 am

2 stops29h 00m

Denver Intl

Thu 10/30

7:19 pm-6:35 pm

2 stops32h 16m

$523

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Thu 12/11

8:35 pm-7:24 pm

2 stops38h 49m

Denver Intl

Mon 1/12

7:04 pm-6:35 pm

2 stops55h 31m

$541

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Mon 2/2

8:35 pm-7:19 pm

1 stop14h 44m

Denver Intl

Wed 2/4

12:35 pm-6:35 pm

1 stop38h 00m

$622

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Tue 10/7

7:40 pm-9:29 am

1 stop28h 49m

Denver Intl

Tue 10/28

6:05 am-3:30 pm

1 stop18h 25m

$636

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Fri 10/10

7:40 pm-7:01 pm

1 stop14h 21m

Denver Intl

Sat 11/22

12:18 pm-4:30 pm

1 stop36h 12m

$637

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Fri 10/10

7:20 pm-11:28 am

1 stop31h 08m

Denver Intl

Mon 11/3

6:23 pm-4:30 pm

2 stops30h 07m

$637

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Tue 11/25

8:05 pm-9:23 am

2 stops29h 18m

Denver Intl

Sun 12/7

12:18 pm-4:30 pm

1 stop36h 12m

$637

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Wed 11/26

7:30 pm-10:29 pm

2 stops18h 59m

Denver Intl

Sun 12/7

3:54 pm-4:30 pm

2 stops32h 36m

$637

IncheonDenver

ICN - DEN

ICNDEN

Incheon Intl

Sun 11/16

6:55 pm-10:18 am

1 stop31h 23m

$395

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 15 results
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Best time to book a flight from Incheon Intl to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Incheon Intl 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 Incheon Intl Airport to Denver

How far ahead should I book a flight from Incheon Intl Airport to Denver?

Use this chart to determine the optimal time to book a round-trip flight from Incheon Intl to Denver. Price data was last updated on August 29, 2025.

The best time to book flights from Incheon Intl Airport to Denver is 39 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.

What is the cheapest month to book a flight from Incheon Intl Airport to Denver?

Currently, October is the cheapest month in which you can book a flight from Incheon Intl Airport to Denver (average of $197). Flying from Incheon Intl Airport to Denver in March is currently the most expensive (average of $278). 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 ICN to DEN?

Find hourly flight availability from Incheon Intl to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

It’s optimal to fly from Incheon Intl Airport to Denver in the afternoon. By choosing this option you can save up to 29% on the cost of your flight, compared to a flight in the evening.

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated September 11, 2025.
Read reviews from past customers who have flown Korean Air, Delta, and United Airlines from Incheon Intl Airport to Denver. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Food

8.1

Overall

8.4

Comfort

8.3

Boarding

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very good
1,139 reviews
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Food

8.1

Overall

8.4

Comfort

8.3

Boarding

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Delta
8.0
Very good
7,960 reviews
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Food

8.1

Overall

8.4

Comfort

8.3

Boarding

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
United Airlines
7.4
Good
8,937 reviews
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Food

8.1

Overall

8.4

Comfort

8.3

Boarding

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
American Airlines
7.2
Good
10,000 reviews
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Food

8.1

Overall

8.4

Comfort

8.3

Boarding

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Air Canada
7.1
Good
10,000 reviews
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Food

8.1

Overall

8.4

Comfort

8.3

Boarding

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Related info for your journey

Find useful and relevant information for your journey from Incheon Intl to Denver. 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 into for flights to Denver from Incheon Intl?

    Located just 18.5 mi from the city center, Denver Intl is the airport most travelers will use when flying to Denver from Incheon Intl. Booking flights from Incheon Intl to Denver Intl (DEN) should be relatively easy as there are 0 daily inbound flights from Incheon Intl from 6 different airlines.

  • How long is the flight from Incheon Intl Airport to Denver?

    United Airlines and Alaska Airlines can get you from Incheon Intl Airport to Denver in just under 29h. Your travel time can differ by up to 1h 28m. The distance between Incheon Intl Airport and Denver is about 6186 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Incheon Intl Airport to Denver round-trip?

    Cheapflights users have booked flights from Incheon Intl Airport to Denver round-trip from $658. Other airlines that can offer you cheap pricing are Air Canada, from $686, and Delta, from $755. You may be able to fly from Incheon Intl Airport to Denver for 37% less than the average price by searching for these airlines.

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

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

  • How can I find direct flights from Incheon Intl to Denver?

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

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

    Yes. Cheapflights offers flight deals from Incheon Intl to Denver 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 Incheon Intl Airport to Denver?

    Currently, October is the cheapest month in which you can book a flight from Incheon Intl Airport to Denver (average of $197). Flying from Incheon Intl Airport to Denver in March is currently the most expensive (average of $278). 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

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Westminster
Black Hawk
Golden
Winter Park
Broomfield
Greeley
Lone Tree
Lakewood
Cripple Creek
Thornton
Silverthorne
Frisco
Manitou Springs
Fort Morgan
Glendale
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Brighton
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Idaho Springs
Parker

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Alternative routes for Incheon Intl to Denver

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

Top 6 airlines flying from Incheon Intl to Denver

Discover the top 6 airlines that operate flights from Incheon Intl to Denver. 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$658Average$981FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$686Average$847FlexibilityNo cancel feeOn-time67%
DeltaCheapest$755Average$1,007FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$757Average$897FlexibilityNo cancel feeOn-time71%
Korean AirCheapest$783Average$1,041FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$800Average$1,070FlexibilityNo cancel feeOn-time76%

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