Nonstop flight route between Tainan City, Taiwan, Republic of China and Alton, Illinois, United States:

About this route:

A direct, nonstop flight between Tainan Airport (TNN), Tainan City, Taiwan, Republic of China and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 7,737 miles (or 12,452 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 Tainan Airport and St. Louis Regional 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 Tainan Airport and St. Louis Regional 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 Tainan Airport (TNN):

• The closest airport to Tainan Airport (TNN) is Kaohsiung International Airport (Kaohsiung Siaogang Airport) (KHH), which is located 27 miles (44 kilometers) SSE of TNN.
• On 24 February 1969, Far Eastern Air Transport Flight 104, a Handley Page Dart Herald with 36 passengers and crew board, crashed while attempting an emergency landing at Tainan.
• Tainan Airport (TNN) has 2 runways.
• In addition to being known as "Tainan Airport", other names for TNN include "臺南航空站台南機場" and "Táinán HángkōngzhànTáinán Jīchǎng".
• A number of US units have been stationed at Tainan Air Base, including the 868th Tactical Missile Squadron from 1958 to 1962, which operated MGM-1 Matadors, probably under the ultimate control of the United States Taiwan Defense Command.
• Because of Tainan Airport's relatively low elevation of 63 feet, planes can take off or land at Tainan 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 Tainan Airport (TNN) is Dr. Luis María Argaña International Airport (ESG), which is nearly antipodal to Tainan Airport (meaning Tainan Airport is almost on the exact opposite side of the Earth from Dr. Luis María Argaña International Airport), and is located 12,355 miles (19,883 kilometers) away in Mariscal Estigarribia, Paraguay.

Facts about St. Louis Regional Airport (ALN):

• 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.
• 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.
• The 2,250 acres airfield sits at 544 ft MSL.
• 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.
• Its operations are paid for by an airport taxation district created in 1946, which collects taxes from property owners in the Madison County townships of Alton, Wood River, Foster and Fort Russell.