The flight distance from Green Bay/Austin Straubel International Airport (GRB) in Green Bay, United States to Singapore Changi International Airport (SIN) in Singapore, Singapore is 14,779 kilometers (9,183 miles / 7,980 nautical miles). The estimated flight time for this route is approximately 18h, flying north northwest at a heading of 343°.

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 05:47 in Green Bay, it's 19:47 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 Green Bay (GRB) follows a heading of 12° (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 Green Bay/Austin Straubel International Airport (GRB) and Singapore Changi International Airport (SIN) detail pages, or use our flight duration calculator to compare other routes.