The flight distance from Great Falls International Airport (GTF) in Great Falls, United States to Melbourne International Airport (MEL) in Melbourne, Australia is 13,933 kilometers (8,658 miles / 7,523 nautical miles). The estimated flight time for this route is approximately 17h, flying west southwest at a heading of 250°.

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

Time zone information: When it's 03:52 in Great Falls, it's 21:52 in Melbourne. With a 18-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 3,246 feet between the two airports. Melbourne International Airport sits lower than Great Falls International Airport.

The return flight from Melbourne (MEL) to Great Falls (GTF) follows a heading of 54° (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 Great Falls International Airport (GTF) and Melbourne International Airport (MEL) detail pages, or use our flight duration calculator to compare other routes.