The cheapest times to fly from DEN to GMP are

  • January 8th to April 22nd (except the weeks of January 22nd, March 12th, and March 19th)
  • August 20th to December 2nd (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 GMP is early April. Prices can be as high as $2390 for Friday flights during late July, or as low as $1096 for Tuesday flights around early April.


When to Fly to Seoul

Flying from Denver, CO (DEN) to Seoul (GMP) will usually cost between $1120 to $1849 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 $1163. Due to high demand the most expensive time to fly is late July, with an average price of $1903. Planning your trip to low-cost times can easily save you $740 on economy flights and even more on first-class flights. Generally, any price below $1343 can be considered a good price for a round-trip DEN to GMP flight.

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

DEN to GMP Flight Prices

Compared to other flights, the DEN to GMP flight is slightly more expensive than the average and costs slightly more than the average flight leaving from Denver. The average price per mile (for a direct flight) is $0.14, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to GMP, and Wednesday the cheapest day to fly back into DEN. Fridays are the most expensive days to fly to Seoul, and Saturdays are the most expensive days to return to Denver. Selecting flights on the least expensive days could save you up to $189 (13%) 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 $1315. Return trip prices are from the GMP 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 GMP 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 5 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from DEN to GMP while comparing.

Destination alternative #1: Incheon International Airport (ICN) in Seoul

  • 20 miles (32 km) away from GMP
  • Usually 16.49% less expensive than GMP
  • 1-layover flights available

See DEN to ICN flights


Flight Hacking DEN to GMP

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 GMP — but Champion Traveler does!

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

  • Price for both tickets: $801
  • Average savings: $542 (40.36%)

See DEN to PEK flights

Hack #2: Taipei (DEN > TSA > GMP)

  • Price for both tickets: $1114
  • Average savings: $230 (17.09%)

See DEN to TSA flights

Hack #3: Seattle, WA (DEN > SEA > GMP)

  • Price for both tickets: $1160
  • Average savings: $184 (13.66%)

See DEN to SEA flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 17 major airlines flying this route most often: Air Canada, Air China, Alaska, American, ANA, Asiana, Austrian, China Airlines, China Eastern, China Southern, Delta, EVA Air, JAL, Korean Air, Lufthansa, SWISS, United, and potentially more during busy seasons.

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

The distance between the two airports is roughly 6171 miles or 9931 kilometers.

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

The real-world flight time for a nonstop DEN to GMP flight is about 12 hour 5 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 60 available flights from DEN to GMP.


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 GMP
Destination airport name Gimpo International Airport
City Seoul
Country South Korea
Latitude 37.6
Longitude 126.8


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.