The cheapest times to fly from DEN to ICN are

  • January 29th to May 20th (except the weeks of February 5th and May 7th)
  • September 17th to December 9th (except the week of November 19th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from DEN to ICN is early April. Prices can be as high as $1789 for Saturday flights during late June, or as low as $898 for Tuesday flights around early April.


When to Fly to Seoul

Flying from Denver, CO (DEN) to Seoul (ICN) will usually cost between $939 to $1640 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early April with an average ticket price of $950. Due to high demand the most expensive time to fly is late June, with an average price of $1687. Planning your trip to low-cost times can easily save you $737 on economy flights and even more on first-class flights. Generally, any price below $1122 can be considered a good price for a round-trip DEN to ICN flight.

See below for a graph of average weekly prices for the DEN to ICN route. All prices are for round-trip tickets in USD.

DEN to ICN Flight Prices

Compared to other flights, the DEN to ICN flight is slightly more expensive than the average and costs about as much as the average flight leaving from Denver. The average price per mile (for a direct flight) is $0.11, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $130 (10%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $1144. Return trip prices are from the ICN to DEN flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from DEN to ICN can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 12 hour 7 minutes may not be realistic.


Flight Hacking DEN to ICN

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from DEN to ICN — but Champion Traveler does!

Hack #1: Beijing (DEN > PEK > ICN)

  • Price for both tickets: $802
  • Average savings: $320 (28.49%)

See DEN to PEK flights

Hack #2: Shanghai (DEN > PVG > ICN)

  • Price for both tickets: $834
  • Average savings: $288 (25.64%)

See DEN to PVG flights

Hack #3: Taipei (DEN > TPE > ICN)

  • Price for both tickets: $972
  • Average savings: $150 (13.37%)

See DEN to TPE flights


Flight Questions Answered

Still have questions about flying from DEN to ICN? We’ve got answers.

Which airlines fly this route?

You can find 23 major airlines flying this route most often: Aeromexico, Air Canada, Air China, Alaska, American, ANA, Asiana, British Airways, Cathay Pacific, China Airlines, China Eastern, China Southern, Delta, Ethiopian, EVA Air, Finnair, JAL, Korean Air, Lufthansa, Singapore Airlines, Turkish Airlines, United, Xiamen, and potentially more during busy seasons.

How far away is it from Incheon International Airport to Denver International Airport?

The distance between the two airports is roughly 6188 miles or 9959 kilometers.

How long does it take to fly from DEN to ICN?

The real-world flight time for a nonstop DEN to ICN flight is about 12 hour 7 minutes.

How many flights go between Denver, CO and Seoul?

It depends on the day of the week and the date, but a typical day might have around 75 available flights from DEN to ICN.


Airport Location Info


Departing Airport

Origination code DEN
Origination airport name Denver International Airport
City Denver, CO
Country the United States
Latitude 39.9
Longitude -104.7

Return Airport

Destination code ICN
Destination airport name Incheon International Airport
City Seoul
Country South Korea
Latitude 37.5
Longitude 126.4


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.