The flight distance from Incheon International Airport (ICN) in Seoul, South Korea to Udon Thani Airport (UTH) in Udon Thani, Thailand is 3,212 kilometers (1,996 miles / 1,735 nautical miles). The estimated flight time for this route is approximately 5h, flying southwest at a heading of 232°.

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 Thailand. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 23:34 in Seoul, it's 21:34 in Udon Thani.

The return flight from Udon Thani (UTH) to Seoul (ICN) follows a heading of 41° (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 Incheon International Airport (ICN) and Udon Thani Airport (UTH) detail pages, or use our flight duration calculator to compare other routes.