Distance From Henry Post Army Air Field (Fort Sill) to Suvarnabhumi Airport, FSI - BKK Distance

The distance from Henry Post Army Air Field (Fort Sill) (FSI) to Suvarnabhumi Airport (BKK) is 8869 miles or 14273 kilometers or 7702 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from Fort Sill ( United States ) to Bangkok ( Thailand )?

A one-way nonstop (direct) flight between Fort Sill and Bangkok takes around 20 hours 23 minutes.

Estimated flight time from Henry Post Army Air Field (Fort Sill), Fort Sill, United States to Suvarnabhumi Airport, Bangkok, Thailand is 20 hours 23 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • FSI - BKK

Kilometers		14273 km
Statute Miles		8869 miles
Nautical Miles		7702 nm
Avg. Time of Flight		20 hours 23 minutes

Henry Post Army Air Field (Fort Sill) to Suvarnabhumi Airport Flight Route Map - FSI to BKK Flight Path

Location of Henry Post Army Air Field (Fort Sill) & Suvarnabhumi Airport is given below.
Click the map to view Fort Sill to Bangkok nonstop flight path and travel direction.

Click to see flight route on Google Map between Fort Sill, United States and Bangkok, Thailand. .

Nonstop flight route between Fort Sill, United States and Bangkok, Thailand.

Time Difference Between the Airports • FSI - BKK

Time difference between Fort Sill (United States) and Bangkok (Thailand) is 13 Hours.
Bangkok time is 13 Hours ahead of Fort Sill.

Location	Local Time
Fort Sill (United States)	2026-05-04, 18:22:07 MDT
Bangkok (Thailand)	2026-05-05, 07:22:07 +07

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Henry Post Army Air Field (Fort Sill) (FSI / KFSI) Fort Sill, United States

Destination

Suvarnabhumi Airport (BKK / VTBS) Bangkok, Thailand