The flight distance from Sofia Airport (SOF) in Sofia, Bulgaria to Udon Thani Airport (UTH) in Udon Thani, Thailand is 7,852 kilometers (4,879 miles / 4,240 nautical miles). The estimated flight time for this route is approximately 10h, flying east at a heading of 84°.

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 Bulgaria with Thailand. It is an intercontinental flight between Europe and Asia. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 08:17 in Sofia, it's 13:17 in Udon Thani. The 5-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

There is a significant elevation difference of 1,163 feet between the two airports. Udon Thani Airport sits lower than Sofia Airport.

The return flight from Udon Thani (UTH) to Sofia (SOF) follows a heading of 310° (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 Sofia Airport (SOF) and Udon Thani Airport (UTH) detail pages, or use our flight duration calculator to compare other routes.