The flight distance from Suvarnabhumi Airport (BKK) in Bangkok, Thailand to Sion Airport (SIR) in Sion, Switzerland is 9,173 kilometers (5,700 miles / 4,953 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 Thailand with Switzerland. It is an intercontinental flight between Asia and Europe. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 09:28 in Bangkok, it's 03:28 in Sion. With a 6-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 1,580 feet between the two airports. Sion Airport sits higher than Suvarnabhumi Airport.

The return flight from Sion (SIR) to Bangkok (BKK) follows a heading of 78° (east 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 Suvarnabhumi Airport (BKK) and Sion Airport (SIR) detail pages, or use our flight duration calculator to compare other routes.