Nonstop flight route between Alton, Illinois, United States and Porto Alegre, Rio Grande do Sul, Brazil:

About this route:

A direct, nonstop flight between St. Louis Regional Airport (ALN), Alton, Illinois, United States and Salgado Filho International Airport (POA), Porto Alegre, Rio Grande do Sul, Brazil would travel a Great Circle distance of 5,377 miles (or 8,653 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 St. Louis Regional Airport and Salgado Filho International 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 St. Louis Regional Airport and Salgado Filho International 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 St. Louis Regional Airport (ALN):

• Today a fair amount of air traffic and the Direct TV blimp comes for Cardinals playoffs, as Lambert's airport cannot take the blimp.
• St. Louis Regional Airport (ALN) has 2 runways.
• Because of St. Louis Regional Airport's relatively low elevation of 544 feet, planes can take off or land at St. Louis Regional 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 St. Louis Regional Airport (ALN) is Margaret River Airport (MGV), which is located 11,002 miles (17,706 kilometers) away in Margaret River, Western Australia, Australia.
• The closest airport to St. Louis Regional Airport (ALN) is Lambert–St. Louis International Airport (STL), which is located only 20 miles (32 kilometers) WSW of ALN.
• West Star Aviation is the largest fixed base operations company at the airport.
• In the spring of 2004 the airport was at the center of a scandal.

Facts about Salgado Filho International Airport (POA):

• The furthest airport from Salgado Filho International Airport (POA) is Yakushima Airport (KUM), which is nearly antipodal to Salgado Filho International Airport (meaning Salgado Filho International Airport is almost on the exact opposite side of the Earth from Yakushima Airport), and is located 12,324 miles (19,834 kilometers) away in Yakushima, Kagoshima Prefecture, Japan.
• In 2012 the airport was ranked 9th in terms of transported passengers in Brazil, placing it amongst the busiest airports in the country.
• In addition to being known as "Salgado Filho International Airport", another name for POA is "Aeroporto Internacional Salgado Filho".
• People mover connects the International Airport to the Porto Alegre Metro Airport Station since August 10, 2013.
• The closest airport to Salgado Filho International Airport (POA) is Diomício Freitas/Forquilhinha Airport (CCM), which is located 137 miles (221 kilometers) NE of POA.
• Salgado Filho International Airport (POA) currently has only 1 runway.
• In 1953 the old terminal was incorporated into the maintenance facilities of Varig, a new passenger terminal was opened, and runways were paved.
• Because of Salgado Filho International Airport's relatively low elevation of 11 feet, planes can take off or land at Salgado Filho 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.