The flight distance from St Louis Lambert International Airport (STL) in St Louis, United States to Union Glacier Blue-Ice Runway (UGL) in Antartica, AQ is 13,188 kilometers (8,194 miles / 7,121 nautical miles). The estimated flight time for this route is approximately 17h, flying south at a heading of 179°.

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 AQ. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 20:37 in St Louis, it's 23:37 in Antartica. The 3-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

There is a significant elevation difference of 1,844 feet between the two airports. Union Glacier Blue-Ice Runway sits higher than St Louis Lambert International Airport.

The return flight from Antartica (UGL) to St Louis (STL) follows a heading of 354° (north). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the St Louis Lambert International Airport (STL) and Union Glacier Blue-Ice Runway (UGL) detail pages, or use our flight duration calculator to compare other routes.