Nonstop flight route between Chek Lap Kok, Hong Kong and Cahokia, Illinois (near St. Louis), United States:

About this route:

A direct, nonstop flight between Hong Kong International Airport (HKG), Chek Lap Kok, Hong Kong and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 7,951 miles (or 12,795 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 Hong Kong International Airport and St. Louis Downtown 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 Hong Kong International Airport and St. Louis Downtown 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 Hong Kong International Airport (HKG):

• In addition to being known as "Hong Kong International Airport", other names for HKG include "Chek Lap Kok Airport" and "香港國際機場赤鱲角機場".
• The construction period was very rushed.
• Terminal 1 of the HKIA is the third largest airport passenger terminal building in the world with an area measuring 570,000 m2, after Dubai International Airport's Terminal 3 and Beijing Capital International Airport's Terminal 3.
• SkyPlaza at the Hong Kong International Airport Terminal 2
• The closest airport to Hong Kong International Airport (HKG) is Shun Tak Heliport (HHP), which is located only 15 miles (25 kilometers) E of HKG.
• On 25 January 2011, Airport Authority Hong Kong unveiled phase 1 of its midfield development project which is targeted for completion by the end of 2015.
• Because of Hong Kong International Airport's relatively low elevation of 28 feet, planes can take off or land at Hong Kong 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.
• The furthest airport from Hong Kong International Airport (HKG) is Capitán Oriel Lea Plaza International Airport (TJA), which is nearly antipodal to Hong Kong International Airport (meaning Hong Kong International Airport is almost on the exact opposite side of the Earth from Capitán Oriel Lea Plaza International Airport), and is located 12,334 miles (19,850 kilometers) away in Tarija, Bolivia.
• Hong Kong International Airport handled 59,900,000 passengers last year.
• Hong Kong International Airport (HKG) has 2 runways.

Facts about St. Louis Downtown Airport (CPS):

• The two survivors out of the airport's original four hangars, Hangar 1 and Hangar 2, are listed on the National Register of Historic Places.
• The furthest airport from St. Louis Downtown Airport (CPS) is Margaret River Airport (MGV), which is located 10,998 miles (17,700 kilometers) away in Margaret River, Western Australia, Australia.
• St. Louis Downtown Airport (CPS) has 3 runways.
• The closest airport to St. Louis Downtown Airport (CPS) is Lambert–St. Louis International Airport (STL), which is located only 16 miles (27 kilometers) NW of CPS.
• Because of St. Louis Downtown Airport's relatively low elevation of 413 feet, planes can take off or land at St. Louis Downtown 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.