Nonstop flight route between Cahokia, Illinois (near St. Louis), United States and Haikou, Hainan, China:

About this route:

A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and Haikou Meilan International Airport (HAK), Haikou, Hainan, China would travel a Great Circle distance of 8,179 miles (or 13,163 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 Downtown Airport and Haikou Meilan 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 Downtown Airport and Haikou Meilan 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 Downtown Airport (CPS):

• 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.
• Historic Hangar #2 houses the Greater Saint Louis Air & Space Museum and the airport is still home to the nation's oldest flight school, Parks College of Engineering and Aviation's Center for Aerospace Sciences, which holds CAA Flight School Certificate #1.
• Taken over by the United States Army Air Forces on 1 August 1939 as a basic pilot training airfield.
• The airport opened in 1929 as Curtiss-Steinberg Airport.
• St. Louis Downtown Airport (CPS) has 3 runways.
• The airport closed in 1959 and reopened six years later as Bi-State Parks Airport.
• 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.

Facts about Haikou Meilan International Airport (HAK):

• Haikou Meilan International Airport handled 10,167,818 passengers last year.
• Haikou Meilan International Airport (HAK) currently has only 1 runway.
• In addition to being known as "Haikou Meilan International Airport", other names for HAK include "海口美兰国际机场", "Hǎikǒu Měilán Guójì Jīchǎng" and "ZJHK[1]".
• A new, international terminal opened on August 14, 2013.
• The furthest airport from Haikou Meilan International Airport (HAK) is Diego Aracena International Airport (IQQ), which is nearly antipodal to Haikou Meilan International Airport (meaning Haikou Meilan International Airport is almost on the exact opposite side of the Earth from Diego Aracena International Airport), and is located 12,378 miles (19,921 kilometers) away in Iquique, Chile.
• The nearby Meilan Airport Railway Station is served by Hainan Eastern Ring Railway.
• Haikou Meilan International Airport is the airport serving Haikou, the capital of Hainan Province, China.
• The closest airport to Haikou Meilan International Airport (HAK) is Zhanjiang Airport (ZHA), which is located 89 miles (143 kilometers) N of HAK.
• Because of Haikou Meilan International Airport's relatively low elevation of 75 feet, planes can take off or land at Haikou Meilan 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.