The flight distance from Sulphur Springs Municipal Airport (SLR) in Sulphur Springs, United States to Sofia Airport (SOF) in Sofia, Bulgaria is 9,546 kilometers (5,932 miles / 5,154 nautical miles). The estimated flight time for this route is approximately 12h, flying northeast at a heading of 40°.

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

Time zone information: When it's 01:43 in Sulphur Springs, it's 09:43 in Sofia. With a 8-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 1,253 feet between the two airports. Sofia Airport sits higher than Sulphur Springs Municipal Airport.

The return flight from Sofia (SOF) to Sulphur Springs (SLR) follows a heading of 313° (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 Sulphur Springs Municipal Airport (SLR) and Sofia Airport (SOF) detail pages, or use our flight duration calculator to compare other routes.