The flight distance from Great Falls International Airport (GTF) in Great Falls, United States to Henri Coanda International Airport (OTP) in Bucharest, Romania is 8,968 kilometers (5,572 miles / 4,842 nautical miles). The estimated flight time for this route is approximately 12h, flying north northeast at a heading of 29°.

This is a long-haul route typically operated by wide-body aircraft such as the Boeing 777 or Airbus A350. Full meal service, in-flight entertainment, and comfort amenities are standard.

This is an international route connecting United States with Romania. It is an intercontinental flight between North America and Europe. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 03:51 in Great Falls, it's 12:51 in Bucharest. With a 9-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 3,366 feet between the two airports. Henri Coanda International Airport sits lower than Great Falls International Airport.

The return flight from Bucharest (OTP) to Great Falls (GTF) follows a heading of 332° (north northwest). 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 Henri Coanda International Airport (OTP) detail pages, or use our flight duration calculator to compare other routes.