Nonstop flight route between Clinton, Oklahoma, United States and Portland, Maine, United States:
Departure Airport:

Arrival Airport:

Distance from CSM to PWM:
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- About this route
- CSM Airport Information
- PWM Airport Information
- Facts about CSM
- Facts about PWM
- Map of Nearest Airports to CSM
- List of Nearest Airports to CSM
- Map of Furthest Airports from CSM
- List of Furthest Airports from CSM
- Map of Nearest Airports to PWM
- List of Nearest Airports to PWM
- Map of Furthest Airports from PWM
- List of Furthest Airports from PWM
About this route:
A direct, nonstop flight between Clinton-Sherman Industrial Airpark (CSM), Clinton, Oklahoma, United States and Portland International Jetport (PWM), Portland, Maine, United States would travel a Great Circle distance of 1,634 miles (or 2,629 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 relatively short distance between Clinton-Sherman Industrial Airpark and Portland International Jetport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | CSM / KCSM |
Airport Name: | Clinton-Sherman Industrial Airpark |
Location: | Clinton, Oklahoma, United States |
GPS Coordinates: | 35°20'22"N by 99°12'2"W |
Area Served: | Clinton, Oklahoma |
Operator/Owner: | Oklahoma Space Industry Development Authority |
Airport Type: | Public |
Elevation: | 1922 feet (586 meters) |
# of Runways: | 2 |
View all routes: | Routes from CSM |
More Information: | CSM Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | PWM / KPWM |
Airport Name: | Portland International Jetport |
Location: | Portland, Maine, United States |
GPS Coordinates: | 43°38'45"N by 70°18'33"W |
Area Served: | Portland, Maine |
Airport Type: | Public |
Elevation: | 76 feet (23 meters) |
# of Runways: | 2 |
View all routes: | Routes from PWM |
More Information: | PWM Maps & Info |
Facts about Clinton-Sherman Industrial Airpark (CSM):
- The airpark is at the site of a public airfield known as Clinton-Sherman Airport.
- The United States Navy established a naval air station on 5,000 acres at this location in 1942 to train pilots during World War II.
- Clinton-Sherman Industrial Airpark (CSM) has 2 runways.
- The closest airport to Clinton-Sherman Industrial Airpark (CSM) is Clinton Regional Airport (CLK), which is located 20 miles (33 kilometers) NE of CSM.
- The furthest airport from Clinton-Sherman Industrial Airpark (CSM) is Sir Gaëtan Duval Airport (RRG), which is located 10,925 miles (17,582 kilometers) away in Rodrigues Island, Mauritius.
Facts about Portland International Jetport (PWM):
- Portland International Jetport (PWM) has 2 runways.
- Jet flights began in 1968, and for the first time Portland got a nonstop beyond Boston when Northeast DC-9s flew to La Guardia.
- Because of Portland International Jetport's relatively low elevation of 76 feet, planes can take off or land at Portland International Jetport 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.
- On September 1, 2005 Delta Air Lines ended mainline service to PWM.
- The furthest airport from Portland International Jetport (PWM) is Margaret River Airport (MGV), which is located 11,705 miles (18,838 kilometers) away in Margaret River, Western Australia, Australia.
- The closest airport to Portland International Jetport (PWM) is Naval Air Station Brunswick (NHZ), which is located 25 miles (40 kilometers) NE of PWM.
- In 2010 Starlink Aviation ended its service to Yarmouth and Halifax, Nova Scotia, citing the loss of a Canadian subsidy.
- That same year, regional Ransome Airlines, doing business as Delta Connection, began a route between Portland and Boston.