Nonstop flight route between Alton, Illinois, United States and Teresina, Piauí, Brazil:

About this route:

A direct, nonstop flight between St. Louis Regional Airport (ALN), Alton, Illinois, United States and Teresina–Senador Petrônio Portella Airport (THE), Teresina, Piauí, Brazil would travel a Great Circle distance of 4,276 miles (or 6,882 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 Teresina–Senador Petrônio Portella 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 Teresina–Senador Petrônio Portella 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):

• West Star Aviation is the largest fixed base operations company at the airport.
• 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.
• 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.
• Today a fair amount of air traffic and the Direct TV blimp comes for Cardinals playoffs, as Lambert's airport cannot take the blimp.
• 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.
• In the spring of 2004 the airport was at the center of a scandal.
• St. Louis Regional Airport (ALN) has 2 runways.

Facts about Teresina–Senador Petrônio Portella Airport (THE):

• Teresina–Senador Petrônio Portella Airport handled 1,091,242 passengers last year.
• The closest airport to Teresina–Senador Petrônio Portella Airport (THE) is Barreirinhas Airport (BRB), which is located 159 miles (256 kilometers) N of THE.
• The furthest airport from Teresina–Senador Petrônio Portella Airport (THE) is Roman Tmetuchl International Airport (ROR), which is nearly antipodal to Teresina–Senador Petrônio Portella Airport (meaning Teresina–Senador Petrônio Portella Airport is almost on the exact opposite side of the Earth from Roman Tmetuchl International Airport), and is located 12,196 miles (19,627 kilometers) away in Koror, Palau.
• Teresina–Senador Petrônio Portella Airport (THE) currently has only 1 runway.
• The airport was opened on September 30, 1967 and since December 23, 1974 it is operated by Infraero.
• Because of Teresina–Senador Petrônio Portella Airport's relatively low elevation of 219 feet, planes can take off or land at Teresina–Senador Petrônio Portella 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.
• In addition to being known as "Teresina–Senador Petrônio Portella Airport", another name for THE is "Aeroporto de Teresina–Senador Petrônio Portella".