The flight distance from Niue International Airport (IUE) in Alofi, NU to St Louis Lambert International Airport (STL) in St Louis, United States is 10,461 kilometers (6,500 miles / 5,648 nautical miles). The estimated flight time for this route is approximately 13h, flying northeast at a heading of 50°.

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

Time zone information: When it's 17:35 in Alofi, it's 22:35 in St Louis. The 5-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

The return flight from St Louis (STL) to Alofi (IUE) follows a heading of 249° (west southwest). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Niue International Airport (IUE) and St Louis Lambert International Airport (STL) detail pages, or use our flight duration calculator to compare other routes.