The cheapest times to fly from SAT to GMP are

  • January 1st to April 8th (except the week of January 22nd)
  • August 20th to December 2nd (except the weeks of September 10th and 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 SAT to GMP is mid November. Prices can be as high as $3049 for Thursday flights during late July, or as low as $1103 for Tuesday flights around mid November.


When to Fly to Seoul

Flying from San Antonio, TX (SAT) to Seoul (GMP) will usually cost between $1103 to $1908 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid November with an average ticket price of $1120. Due to high demand the most expensive time to fly is late July, with an average price of $2033. Planning your trip to low-cost times can easily save you $913 on economy flights and even more on first-class flights. Generally, any price below $1200 can be considered a good price for a round-trip SAT to GMP flight.

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

SAT to GMP Flight Prices

Compared to other flights, the SAT to GMP flight is slightly more expensive than the average and costs slightly more than the average flight leaving from San Antonio. 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. Thursdays are the most expensive days to fly to Seoul, and Sundays are the most expensive days to return to San Antonio. Selecting flights on the least expensive days could save you up to $257 (18%) 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 $1287. Return trip prices are from the GMP to SAT 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 SAT 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 30 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 SAT to GMP while comparing.

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

  • 20 miles (32 km) away from GMP
  • Usually 9.00% less expensive than GMP
  • 1-layover flights available

See SAT to ICN flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 14 major airlines flying this route most often: Air Canada, Air China, Alaska, American, ANA, Asiana, China Airlines, China Eastern, China Southern, Delta, EVA Air, JAL, Korean Air, United, and potentially more during busy seasons.

How far away is it from Gimpo International Airport to San Antonio International Airport?

The distance between the two airports is roughly 6954 miles or 11191 kilometers.

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

The real-world flight time for a nonstop SAT to GMP flight is about 13 hour 30 minutes.

How many flights go between San Antonio, TX and Seoul?

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


Airport Location Info


Departing Airport

Origination code SAT
Origination airport name San Antonio International Airport
City San Antonio, TX
Country the United States
Latitude 29.5
Longitude -98.5

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.