Nonstop flight route between Canton Island, Kiribati and Roundup, Montana, United States:
Departure Airport:

Arrival Airport:

Distance from CIS to RPX:
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- About this route
- CIS Airport Information
- RPX Airport Information
- Facts about CIS
- Facts about RPX
- Map of Nearest Airports to CIS
- List of Nearest Airports to CIS
- Map of Furthest Airports from CIS
- List of Furthest Airports from CIS
- Map of Nearest Airports to RPX
- List of Nearest Airports to RPX
- Map of Furthest Airports from RPX
- List of Furthest Airports from RPX
About this route:
A direct, nonstop flight between Canton Island Airport (CIS), Canton Island, Kiribati and Roundup Airport (RPX), Roundup, Montana, United States would travel a Great Circle distance of 5,113 miles (or 8,229 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 Canton Island Airport and Roundup 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 Canton Island Airport and Roundup Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | CIS / PCIS |
Airport Name: | Canton Island Airport |
Location: | Canton Island, Kiribati |
GPS Coordinates: | 2°46'9"S by 171°42'19"W |
Elevation: | 9 feet (3 meters) |
# of Runways: | 1 |
View all routes: | Routes from CIS |
More Information: | CIS Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | RPX / KRPX |
Airport Name: | Roundup Airport |
Location: | Roundup, Montana, United States |
GPS Coordinates: | 46°28'30"N by 108°32'35"W |
Area Served: | Roundup, Montana |
Operator/Owner: | City of Roundup & Musselshell County |
Airport Type: | Public |
Elevation: | 3490 feet (1,064 meters) |
# of Runways: | 2 |
View all routes: | Routes from RPX |
More Information: | RPX Maps & Info |
Facts about Canton Island Airport (CIS):
- Because of Canton Island Airport's relatively low elevation of 9 feet, planes can take off or land at Canton Island 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.
- Canton Island Airport (CIS) currently has only 1 runway.
- Though Kanton Island was never physically invaded by Japanese forces, the airfield was bombarded on 1 November 1943 by the Japanese submarine I-36.
- The closest airport to Canton Island Airport (CIS) is Funafuti International Airport (FUN), which is located 741 miles (1,193 kilometers) WSW of CIS.
- The furthest airport from Canton Island Airport (CIS) is Malabo International Airport (SSG), which is nearly antipodal to Canton Island Airport (meaning Canton Island Airport is almost on the exact opposite side of the Earth from Malabo International Airport), and is located 12,363 miles (19,896 kilometers) away in Malabo, Equatorial Guinea.
- During World War II, Kanton Island was considered part of the British-controlled Gilbert and Ellice Islands colony.
- The airport was used as a military airfield during World War II by the United States Army Air Forces in 1942 and 1943, initially being used by the 40th Ferrying Squadron, Ferrying Command as an airfield for moving combat aircraft to forward combat units.
Facts about Roundup Airport (RPX):
- The closest airport to Roundup Airport (RPX) is Billings Logan International Airport (BIL), which is located 46 miles (74 kilometers) S of RPX.
- The furthest airport from Roundup Airport (RPX) is Sir Gaëtan Duval Airport (RRG), which is located 10,535 miles (16,954 kilometers) away in Rodrigues Island, Mauritius.
- Roundup Airport (RPX) has 2 runways.