The flight distance from Singapore Changi International Airport (SIN) in Singapore, Singapore to Black Hills-Clyde Ice Field (SPF) in Spearfish, United States is 14,224 kilometers (8,839 miles / 7,680 nautical miles). The estimated flight time for this route is approximately 18h, flying north northeast at a heading of 25°.

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

Time zone information: When it's 21:08 in Singapore, it's 06:08 in Spearfish. With a 15-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 3,911 feet between the two airports. Black Hills-Clyde Ice Field sits higher than Singapore Changi International Airport.

The return flight from Spearfish (SPF) to Singapore (SIN) follows a heading of 324° (northwest). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Singapore Changi International Airport (SIN) and Black Hills-Clyde Ice Field (SPF) detail pages, or use our flight duration calculator to compare other routes.