The flight distance from Guarulhos - Governador Andre Franco Montoro International Airport (GRU) in Sao Paulo, Brazil to Castle Airport (MER) in Atwater, United States is 10,277 kilometers (6,386 miles / 5,549 nautical miles). The estimated flight time for this route is approximately 13h, flying northwest at a heading of 310°.

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

Time zone information: When it's 12:50 in Sao Paulo, it's 07:50 in Atwater. The 5-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

There is a significant elevation difference of 2,269 feet between the two airports. Castle Airport sits lower than Guarulhos - Governador Andre Franco Montoro International Airport.

The return flight from Atwater (MER) to Sao Paulo (GRU) follows a heading of 118° (east southeast). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Guarulhos - Governador Andre Franco Montoro International Airport (GRU) and Castle Airport (MER) detail pages, or use our flight duration calculator to compare other routes.