The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Seoul Air Base (SSN) in Seoul Air Base, South Korea is 4,024 kilometers (2,501 miles / 2,173 nautical miles). The estimated flight time for this route is approximately 6h, flying east northeast at a heading of 64°.

This is a long-haul route typically operated by wide-body aircraft such as the Boeing 777 or Airbus A350. Full meal service, in-flight entertainment, and comfort amenities are standard.

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

Time zone information: When it's 07:46 in Kathmandu, it's 11:01 in Seoul Air Base. 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 4,298 feet between the two airports. Seoul Air Base sits lower than Tribhuvan International Airport.

The return flight from Seoul Air Base (SSN) to Kathmandu (KTM) follows a heading of 267° (west). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

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