Nonstop flight route between Ulanhot, China and Impfondo, Republic of the Congo:
Departure Airport:

Arrival Airport:

Distance from HLH to ION:
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- About this route
- HLH Airport Information
- ION Airport Information
- Facts about HLH
- Facts about ION
- Map of Nearest Airports to HLH
- List of Nearest Airports to HLH
- Map of Furthest Airports from HLH
- List of Furthest Airports from HLH
- Map of Nearest Airports to ION
- List of Nearest Airports to ION
- Map of Furthest Airports from ION
- List of Furthest Airports from ION
About this route:
A direct, nonstop flight between Ulanhot Airport (HLH), Ulanhot, China and Impfondo Airport (ION), Impfondo, Republic of the Congo would travel a Great Circle distance of 6,802 miles (or 10,947 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 Ulanhot Airport and Impfondo 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 Ulanhot Airport and Impfondo Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | HLH / ZBUL |
Airport Name: | Ulanhot Airport |
Location: | Ulanhot, China |
GPS Coordinates: | 46°11'43"N by 122°0'29"E |
Elevation: | 0 feet (0 meters) |
View all routes: | Routes from HLH |
More Information: | HLH Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | ION / FCOI |
Airport Name: | Impfondo Airport |
Location: | Impfondo, Republic of the Congo |
GPS Coordinates: | 1°35'21"N by 18°2'42"E |
Area Served: | Impfondo, Republic of the Congo |
Elevation: | 1099 feet (335 meters) |
View all routes: | Routes from ION |
More Information: | ION Maps & Info |
Facts about Ulanhot Airport (HLH):
- Because of Ulanhot Airport's relatively low elevation of 0 feet, planes can take off or land at Ulanhot 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 Ulanhot Airport (HLH) is Arxan Yi'ershi Airport (YIE), which is located 126 miles (202 kilometers) NW of HLH.
- The furthest airport from Ulanhot Airport (HLH) is Port Stanley Airport (PSY), which is nearly antipodal to Ulanhot Airport (meaning Ulanhot Airport is almost on the exact opposite side of the Earth from Port Stanley Airport), and is located 12,057 miles (19,404 kilometers) away in Stanley, Falkland Islands, United Kingdom.
Facts about Impfondo Airport (ION):
- The furthest airport from Impfondo Airport (ION) is Cassidy International Airport (CXI), which is nearly antipodal to Impfondo Airport (meaning Impfondo Airport is almost on the exact opposite side of the Earth from Cassidy International Airport), and is located 12,034 miles (19,367 kilometers) away in Christmas Island, Kiribati.
- The closest airport to Impfondo Airport (ION) is Bétou Airport (BTB), which is located 106 miles (170 kilometers) NNE of ION.