Nonstop flight route between Champaign-Urbana, Illinois, United States and Siem Reap, Cambodia:
Departure Airport:

Arrival Airport:

Distance from CMI to REP:
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- About this route
- CMI Airport Information
- REP Airport Information
- Facts about CMI
- Facts about REP
- Map of Nearest Airports to CMI
- List of Nearest Airports to CMI
- Map of Furthest Airports from CMI
- List of Furthest Airports from CMI
- Map of Nearest Airports to REP
- List of Nearest Airports to REP
- Map of Furthest Airports from REP
- List of Furthest Airports from REP
About this route:
A direct, nonstop flight between University of Illinois Willard Airport (CMI), Champaign-Urbana, Illinois, United States and Siem Reap-Angkor International Airport (REP), Siem Reap, Cambodia would travel a Great Circle distance of 8,663 miles (or 13,942 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 University of Illinois Willard Airport and Siem Reap-Angkor 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 University of Illinois Willard Airport and Siem Reap-Angkor International Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | CMI / KCMI |
Airport Name: | University of Illinois Willard Airport |
Location: | Champaign-Urbana, Illinois, United States |
GPS Coordinates: | 40°2'21"N by 88°16'41"W |
Area Served: | Champaign-Urbana, Illinois |
Operator/Owner: | University of Illinois at Urbana-Champaign |
Airport Type: | Public |
Elevation: | 754 feet (230 meters) |
# of Runways: | 4 |
View all routes: | Routes from CMI |
More Information: | CMI Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | REP / VDSR |
Airport Names: |
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Location: | Siem Reap, Cambodia |
GPS Coordinates: | 13°24'38"N by 103°48'46"E |
Area Served: | Siem Reab, Cambodia |
Airport Type: | Public |
Elevation: | 60 feet (18 meters) |
# of Runways: | 1 |
View all routes: | Routes from REP |
More Information: | REP Maps & Info |
Facts about University of Illinois Willard Airport (CMI):
- The furthest airport from University of Illinois Willard Airport (CMI) is Margaret River Airport (MGV), which is located 11,084 miles (17,838 kilometers) away in Margaret River, Western Australia, Australia.
- Because of University of Illinois Willard Airport's relatively low elevation of 754 feet, planes can take off or land at University of Illinois Willard 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 is served by buses from the Champaign-Urbana Mass Transit District, which connect with intercity buses and with Amtrak.
- The closest airport to University of Illinois Willard Airport (CMI) is Decatur Airport (DEC), which is located 34 miles (55 kilometers) WSW of CMI.
- University of Illinois Willard Airport (CMI) has 4 runways.
- University of Illinois Willard Airport is south of Savoy in Tolono Township, Champaign County, Illinois.
Facts about Siem Reap-Angkor International Airport (REP):
- Because of Siem Reap-Angkor International Airport's relatively low elevation of 60 feet, planes can take off or land at Siem Reap-Angkor 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 Siem Reap-Angkor International Airport (REP) is Capitán FAP Renán Elías Olivera International Airport (PIO), which is nearly antipodal to Siem Reap-Angkor International Airport (meaning Siem Reap-Angkor International Airport is almost on the exact opposite side of the Earth from Capitán FAP Renán Elías Olivera International Airport), and is located 12,414 miles (19,978 kilometers) away in Pisco, Peru.
- Siem Reap-Angkor International Airport (REP) currently has only 1 runway.
- In addition to being known as "Siem Reap-Angkor International Airport", other names for REP include "សៀមរាបព្រលានយន្តហោះអន្តរជាតិ" and "Aéroport International de Siem Reab".
- The airport resides at an elevation of 60 feet above mean sea level.
- The closest airport to Siem Reap-Angkor International Airport (REP) is Battambang Airport (BBM), which is located 45 miles (73 kilometers) WSW of REP.