The flight distance from Seosan Air Base (HMY) in Seosan, South Korea to Juan Santamaria International Airport (SJO) in San Jose, Costa Rica is 13,913 kilometers (8,645 miles / 7,512 nautical miles). The estimated flight time for this route is approximately 17h, flying northeast at a heading of 38°.

This is an ultra-long-haul route, one of the longest in aviation. It requires wide-body aircraft with extended range capability such as the Airbus A350-900ULR or Boeing 777-200LR. Passengers should prepare for an extended flight with multiple meal services.

This is an international route connecting South Korea with Costa Rica. It is an intercontinental flight between Asia and North America. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 08:34 in Seosan, it's 17:34 in San Jose. With a 15-hour time difference, travelers should plan for significant jet lag. It typically takes one day per hour of time difference to fully adjust.

There is a significant elevation difference of 2,982 feet between the two airports. Juan Santamaria International Airport sits higher than Seosan Air Base.

The return flight from San Jose (SJO) to Seosan (HMY) follows a heading of 330° (north northwest). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Seosan Air Base (HMY) and Juan Santamaria International Airport (SJO) detail pages, or use our flight duration calculator to compare other routes.