Nonstop flight route between Portland, Oregon, United States and Antalaha, Madagascar:

About this route:

A direct, nonstop flight between Portland International Airport (PDX), Portland, Oregon, United States and Antsirabato Airport (ANM), Antalaha, Madagascar would travel a Great Circle distance of 10,284 miles (or 16,550 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 Portland International Airport and Antsirabato Airport, 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 Portland International Airport and Antsirabato Airport. 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 Portland International Airport (PDX):

• The present H-shape of the PDX terminal, designed by Zimmer Gunsul Frasca Partnership, was completed on September 10, 2001 when the new A, B and C concourses, as well as the light rail line, were finished.
• The furthest airport from Portland International Airport (PDX) is Tôlanaro Airport (FTU), which is located 10,903 miles (17,546 kilometers) away in Tôlanaro, Madagascar.
• The main terminal consists of one building roughly "H"-shaped and is divided into five concourses.
• In 1948 the entire airport grounds were flooded during the Vanport Flood, forcing scheduled airline services to reroute to nearby Troutdale Airport.
• Portland International Airport (PDX) has 3 runways.
• The closest airport to Portland International Airport (PDX) is Portland-Troutdale Airport (TTD), which is located only 10 miles (16 kilometers) ESE of PDX.
• In 1925 aviation proponents proposed an airport for Portland on Swan Island, northwest of downtown Portland on the Willamette River.
• The April 1957 OAG shows 38 United departures a day, 10 West Coast, 8 Northwest and 6 Western.
• Because of Portland International Airport's relatively low elevation of 30 feet, planes can take off or land at Portland International 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.
• Concourses A and B are given mostly to Alaska Airlines and Horizon Air.
• Portland International Airport handled 1,502,956 passengers last year.

Facts about Antsirabato Airport (ANM):

• Because of Antsirabato Airport's relatively low elevation of 0 feet, planes can take off or land at Antsirabato 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.
• The furthest airport from Antsirabato Airport (ANM) is Guerrero Negro Airport (GUB), which is located 11,089 miles (17,847 kilometers) away in Guerrero Negro, Baja California Sur, Mexico.
• The closest airport to Antsirabato Airport (ANM) is Mandritsara Airport (WMA), which is located 114 miles (184 kilometers) WSW of ANM.