The flight distance from Noi Bai International Airport (HAN) in Hanoi, Vietnam to Marechal Cunha Machado International Airport (SLZ) in Sao Luis, Brazil is 16,168 kilometers (10,046 miles / 8,730 nautical miles). The estimated flight time for this route is approximately 20h, flying west northwest at a heading of 299°.

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

Time zone information: When it's 14:35 in Hanoi, it's 04:35 in Sao Luis. With a 10-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 Sao Luis (SLZ) to Hanoi (HAN) follows a heading of 55° (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 Noi Bai International Airport (HAN) and Marechal Cunha Machado International Airport (SLZ) detail pages, or use our flight duration calculator to compare other routes.