FSI
Fort Sill
United States
15,382 km
9,558 miles
SIN
Singapore
Singapore
Distance
15,382 km
9,558 mi / 8,306 nm
Est. Flight Time
19h
Ultra-long-haul route
Time Difference
+14h
America/Chicago
Heading
325°
northwest

Airport Comparison

FSI SIN
Airport Name Henry Post Army Air Field (Fort Sill) Airport Singapore Changi International Airport
IATA Code FSI SIN
ICAO Code KFSI WSSS
City Fort Sill Singapore
Country United States Singapore
Timezone America/Chicago Asia/Singapore
Elevation 1,188 ft 22 ft
Coordinates 34.650000, -98.400000 1.350000, 103.990000

Fort Sill (FSI) to Singapore (SIN) Flight Distance

The flight distance from Henry Post Army Air Field (Fort Sill) Airport (FSI) in Fort Sill, United States to Singapore Changi International Airport (SIN) in Singapore, Singapore is 15,382 kilometers (9,558 miles / 8,306 nautical miles). The estimated flight time for this route is approximately 19h, flying northwest at a heading of 325°.

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 Singapore. It is an intercontinental flight between North America and Asia. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 12:35 in Fort Sill, it's 02:35 in Singapore. With a 14-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 1,166 feet between the two airports. Singapore Changi International Airport sits lower than Henry Post Army Air Field (Fort Sill) Airport.

The return flight from Singapore (SIN) to Fort Sill (FSI) follows a heading of 28° (north 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 Henry Post Army Air Field (Fort Sill) Airport (FSI) and Singapore Changi International Airport (SIN) detail pages, or use our flight duration calculator to compare other routes.

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