The flight distance from Guarulhos - Governador Andre Franco Montoro International Airport (GRU) in Sao Paulo, Brazil to St Mary's Airport (KSM) in St Mary'S, United States is 13,683 kilometers (8,502 miles / 7,388 nautical miles). The estimated flight time for this route is approximately 17h, flying north northwest at a heading of 330°.

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 16:44 in Sao Paulo, it's 10:44 in St Mary'S. With a 6-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 2,145 feet between the two airports. St Mary's Airport sits lower than Guarulhos - Governador Andre Franco Montoro International Airport.

The return flight from St Mary'S (KSM) to Sao Paulo (GRU) follows a heading of 78° (east 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 Guarulhos - Governador Andre Franco Montoro International Airport (GRU) and St Mary's Airport (KSM) detail pages, or use our flight duration calculator to compare other routes.