Nonstop flight route between Porto, Portugal and Great Falls, Montana, United States:

About this route:

A direct, nonstop flight between Francisco Sá Carneiro Airport (OPO), Porto, Portugal and Malmstrom Air Force Base (GFA), Great Falls, Montana, United States would travel a Great Circle distance of 4,692 miles (or 7,552 kilometers).

A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the large distance between Francisco Sá Carneiro Airport and Malmstrom Air Force Base, the route shown on this map most likely appears curved because of this reason.

Try it at home! Get a globe and tightly lay a string between Francisco Sá Carneiro Airport and Malmstrom Air Force Base. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

Arrival Airport Information:

Facts about Francisco Sá Carneiro Airport (OPO):

• Francisco Sá Carneiro Airport (OPO) currently has only 1 runway.
• In addition to being known as "Francisco Sá Carneiro Airport", another name for OPO is "Aeroporto Francisco Sá Carneiro".
• Francisco Sá Carneiro Airport handled 6,050,094 passengers last year.
• The furthest airport from Francisco Sá Carneiro Airport (OPO) is Westport Airport (WSZ), which is nearly antipodal to Francisco Sá Carneiro Airport (meaning Francisco Sá Carneiro Airport is almost on the exact opposite side of the Earth from Westport Airport), and is located 12,400 miles (19,955 kilometers) away in Westport, New Zealand.
• The closest airport to Francisco Sá Carneiro Airport (OPO) is Braga Airport (BGZ), which is located 27 miles (44 kilometers) NNE of OPO.
• In 2007, the airport was voted the Best Airport in Europe in the Airport Service Quality Awards by Airports Council International.
• The airport is served by Line E of the Porto Metro.
• Because of Francisco Sá Carneiro Airport's relatively low elevation of 226 feet, planes can take off or land at Francisco Sá Carneiro Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
• Francisco Sá Carneiro Airport or simply Porto Airport is an international airport near Porto, Portugal.

Facts about Malmstrom Air Force Base (GFA):

• The North American Aerospace Defense Command was created in 1957.
• The closest airport to Malmstrom Air Force Base (GFA) is Great Falls International Airport (GTF), which is located only 9 miles (14 kilometers) W of GFA.
• In 1959 a SAGE data center was established at Malmstrom.
• The furthest airport from Malmstrom Air Force Base (GFA) is Sir Gaëtan Duval Airport (RRG), which is located 10,495 miles (16,891 kilometers) away in Rodrigues Island, Mauritius.
• Great Falls became the temporary home of the 582nd Air Resupply and Communications Wing on 1 May 1953 which was transferred from Mountain Home AFB, Idaho.
• DC-20 was initially under the Great Falls Air Defense Sector, established on 1 March 1959.
• At Great Falls, P-39 Airacobras, C-47 Skytrains, B-25 Mitchells, and A-20 Havocs aircraft.
• Following World War II, Great Falls Army Air Base played an important role in US defense during the Cold War era.
• In addition to being known as "Malmstrom Air Force Base", another name for GFA is "Malmstrom AFB".