Nonstop flight route between Alton, Illinois, United States and Saga, Kyūshū, Japan:

About this route:

A direct, nonstop flight between St. Louis Regional Airport (ALN), Alton, Illinois, United States and Saga Airport (HSG), Saga, Kyūshū, Japan would travel a Great Circle distance of 6,828 miles (or 10,988 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 Saga 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 Saga 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):

• The 2,250 acres airfield sits at 544 ft MSL.
• West Star Aviation is the largest fixed base operations company at the airport.
• Civic Memorial Airport opened in 1946 and received its current name in 1984.
• St. Louis Regional Airport (ALN) has 2 runways.
• 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.
• 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.

Facts about Saga Airport (HSG):

• The governor of Saga Prefecture announced the construction of Saga Airport in January 1969, and after years of studies and negotiations, construction commenced in 1997.
• The closest airport to Saga Airport (HSG) is Nagasaki Airport (NGS), which is located 28 miles (45 kilometers) SW of HSG.
• In 2004, the airport's hours were extended to allow service between midnight and 4 a.m., and ANA began overnight cargo service between Saga and Tokyo, initially using passenger aircraft but switching to Boeing 767 freighter aircraft in 2006.
• The furthest airport from Saga Airport (HSG) is Rio Grande Regional Airport (RIG), which is nearly antipodal to Saga Airport (meaning Saga Airport is almost on the exact opposite side of the Earth from Rio Grande Regional Airport), and is located 12,275 miles (19,755 kilometers) away in Rio Grande, Brazil.
• Because of Saga Airport's relatively low elevation of 6 feet, planes can take off or land at Saga 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.
• Saga was a candidate destination to receive an additional pair of Haneda Airport slots in November 2013, but its bid was rejected by the government due to its existing four-daily service and its proximity to Fukuoka Airport.
• In addition to being known as "Saga Airport", other names for HSG include "佐賀空港" and "Saga-kūkō".
• Saga Airport (HSG) currently has only 1 runway.
• Saga Airport is an airport in the Kawasoe area of Saga, Saga Prefecture, Japan.