The cheapest times to fly from SDF to GMP are

  • January 1st to March 11th
  • August 20th to December 9th (except the week of September 10th)

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 SDF to GMP is early November. Prices can be as high as $2620 for Thursday flights during early to mid June, or as low as $1109 for Tuesday flights around early November.


When to Fly to Seoul

Flying from Louisville, KY (SDF) to Seoul (GMP) will usually cost between $1120 to $2107 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early November with an average ticket price of $1133. Due to high demand the most expensive time to fly is early to mid June, with an average price of $2094. Planning your trip to low-cost times can easily save you $961 on economy flights and even more on first-class flights. Generally, any price below $1276 can be considered a good price for a round-trip SDF to GMP flight.

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

SDF to GMP Flight Prices

Compared to other flights, the SDF to GMP flight is slightly more expensive than the average and costs more than the average flight leaving from Louisville. The average price per mile (for a direct flight) is $0.12, 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. Thursdays are the most expensive days to fly to Seoul, and Saturdays are the most expensive days to return to Louisville. Selecting flights on the least expensive days could save you up to $207 (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 $1298. Return trip prices are from the GMP to SDF 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 SDF to GMP can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 13 hour 14 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 SDF to GMP while comparing.

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

  • 20 miles (32 km) away from GMP
  • Usually 9.87% less expensive than GMP
  • 1-layover flights available

See SDF to ICN flights


Flight Hacking SDF 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 SDF to GMP — but Champion Traveler does!

Hack #1: Houston, TX (SDF > IAH > GMP)

  • Price for both tickets: $1246
  • Average savings: $31 (2.39%)

See SDF to IAH flights

Hack #2: Los Angeles, CA (SDF > LAX > GMP)

  • Price for both tickets: $1259
  • Average savings: $17 (1.33%)

See SDF to LAX flights

Hack #3: New York, NY (SDF > JFK > GMP)

  • Price for both tickets: $1274
  • Average savings: $3 (0.2%)

See SDF to JFK flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 9 major airlines flying this route most often: Air Canada, American, ANA, Asiana, China Southern, Delta, JAL, Korean Air, United, and potentially more during busy seasons.

How far away is it from Gimpo International Airport to Louisville International-Standiford Field Airport?

The distance between the two airports is roughly 6808 miles or 10956 kilometers.

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

The real-world flight time for a nonstop SDF to GMP flight is about 13 hour 14 minutes.

How many flights go between Louisville, KY and Seoul?

It depends on the day of the week and the date, but a typical day might have around 40 available flights from SDF to GMP.


Airport Location Info


Departing Airport

Origination code SDF
Origination airport name Louisville International-Standiford Field Airport
City Louisville, KY
Country the United States
Latitude 38.2
Longitude -85.7

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.