Nonstop flight route between Hanoi, Vietnam and Cahokia, Illinois (near St. Louis), United States:
Departure Airport:

Arrival Airport:

Distance from HAN to CPS:
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- About this route
- HAN Airport Information
- CPS Airport Information
- Facts about HAN
- Facts about CPS
- Map of Nearest Airports to HAN
- List of Nearest Airports to HAN
- Map of Furthest Airports from HAN
- List of Furthest Airports from HAN
- Map of Nearest Airports to CPS
- List of Nearest Airports to CPS
- Map of Furthest Airports from CPS
- List of Furthest Airports from CPS
About this route:
A direct, nonstop flight between Nội Bài International Airport (HAN), Hanoi, Vietnam and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 8,178 miles (or 13,161 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 Nội Bài 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 Nội Bài 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:
IATA / ICAO Codes: | HAN / VVNB |
Airport Names: |
|
Location: | Hanoi, Vietnam |
GPS Coordinates: | 21°13'15"N by 105°48'25"E |
Area Served: | Hanoi |
Operator/Owner: | Northern Airports Authority |
Airport Type: | Civil/Military |
Elevation: | 39 feet (12 meters) |
# of Runways: | 2 |
View all routes: | Routes from HAN |
More Information: | HAN Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | CPS / KCPS |
Airport Name: | St. Louis Downtown Airport |
Location: | Cahokia, Illinois (near St. Louis), United States |
GPS Coordinates: | 38°34'14"N by 90°9'21"W |
Area Served: | Greater St. Louis |
Operator/Owner: | Bi-State Development Agency |
Airport Type: | Public |
Elevation: | 413 feet (126 meters) |
# of Runways: | 3 |
View all routes: | Routes from CPS |
More Information: | CPS Maps & Info |
Facts about Nội Bài International Airport (HAN):
- As of December 2011, there was only one passenger terminal at Nội Bài Airport.
- The furthest airport from Nội Bài International Airport (HAN) is Diego Aracena International Airport (IQQ), which is nearly antipodal to Nội Bài International Airport (meaning Nội Bài International Airport is almost on the exact opposite side of the Earth from Diego Aracena International Airport), and is located 12,174 miles (19,591 kilometers) away in Iquique, Chile.
- The closest airport to Nội Bài International Airport (HAN) is Cat Bi International Airport (HPH), which is located 65 miles (105 kilometers) ESE of HAN.
- Because of Nội Bài International Airport's relatively low elevation of 39 feet, planes can take off or land at Nội Bài 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 airport has a new 3,800-meter paved runway and an older 3,200-meter paved runway
- Nội Bài International Airport (HAN) has 2 runways.
- In addition to being known as "Nội Bài International Airport", another name for HAN is "Sân bay Quốc tế Nội Bài".
Facts about St. Louis Downtown Airport (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.
- 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.
- St. Louis Downtown Airport (CPS) has 3 runways.
- Taken over by the United States Army Air Forces on 1 August 1939 as a basic pilot training airfield.
- 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.