The flight distance from Yoakum-Defrenn Army Heliport (HLR) in Fort Cavazos (Killeen), United States to Singapore Changi International Airport (SIN) in Singapore, Singapore is 15,741 kilometers (9,781 miles / 8,499 nautical miles). The estimated flight time for this route is approximately 20h, flying northwest at a heading of 324°.

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 14:40 in Fort Cavazos (Killeen), it's 04:40 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.

The return flight from Singapore (SIN) to Fort Cavazos (Killeen) (HLR) follows a heading of 31° (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 Yoakum-Defrenn Army Heliport (HLR) and Singapore Changi International Airport (SIN) detail pages, or use our flight duration calculator to compare other routes.