The flight distance from Gimpo International Airport (GMP) in Seoul, South Korea to Tribhuvan International Airport (KTM) in Kathmandu, Nepal is 3,997 kilometers (2,483 miles / 2,158 nautical miles). The estimated flight time for this route is approximately 6h, flying west at a heading of 266°.

This is a medium-haul route that may be operated by either narrow-body or wide-body aircraft depending on demand. Passengers can expect a meal service on most carriers.

This is an international route connecting South Korea with Nepal. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 23:58 in Seoul, it's 20:43 in Kathmandu. The 3.25-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

There is a significant elevation difference of 4,332 feet between the two airports. Tribhuvan International Airport sits higher than Gimpo International Airport.

The return flight from Kathmandu (KTM) to Seoul (GMP) follows a heading of 63° (east northeast). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Gimpo International Airport (GMP) and Tribhuvan International Airport (KTM) detail pages, or use our flight duration calculator to compare other routes.