The flight distance from Henri Coanda International Airport (OTP) in Bucharest, Romania to Smith Field (SLG) in Siloam Springs, United States is 9,230 kilometers (5,735 miles / 4,984 nautical miles). The estimated flight time for this route is approximately 12h, flying northwest at a heading of 316°.

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

Time zone information: When it's 03:11 in Bucharest, it's 19:11 in Siloam Springs. 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.

The return flight from Siloam Springs (SLG) to Bucharest (OTP) follows a heading of 38° (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 Henri Coanda International Airport (OTP) and Smith Field (SLG) detail pages, or use our flight duration calculator to compare other routes.