The flight distance from Incheon International Airport (ICN) in Seoul, South Korea to Joslin Field/Magic Valley Regional Airport (TWF) in Twin Falls, United States is 9,199 kilometers (5,716 miles / 4,967 nautical miles). The estimated flight time for this route is approximately 12h, flying northeast at a heading of 41°.

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 United States. 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 06:20 in Seoul, it's 14:20 in Twin Falls. With a 16-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 4,130 feet between the two airports. Joslin Field/Magic Valley Regional Airport sits higher than Incheon International Airport.

The return flight from Twin Falls (TWF) to Seoul (ICN) follows a heading of 316° (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 Incheon International Airport (ICN) and Joslin Field/Magic Valley Regional Airport (TWF) detail pages, or use our flight duration calculator to compare other routes.