Nonstop flight route between St. Catharines, Ontario, Canada and Portsmouth, New Hampshire, United States:
Departure Airport:

Arrival Airport:

Distance from YCM to PSM:
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- About this route
- YCM Airport Information
- PSM Airport Information
- Facts about YCM
- Facts about PSM
- Map of Nearest Airports to YCM
- List of Nearest Airports to YCM
- Map of Furthest Airports from YCM
- List of Furthest Airports from YCM
- Map of Nearest Airports to PSM
- List of Nearest Airports to PSM
- Map of Furthest Airports from PSM
- List of Furthest Airports from PSM
About this route:
A direct, nonstop flight between St. Catharines/Niagara District Airport (YCM), St. Catharines, Ontario, Canada and Portsmouth International Airport at Pease (PSM), Portsmouth, New Hampshire, United States would travel a Great Circle distance of 421 miles (or 677 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 St. Catharines/Niagara District Airport and Portsmouth International Airport at Pease, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | YCM / CYSN |
Airport Name: | St. Catharines/Niagara District Airport |
Location: | St. Catharines, Ontario, Canada |
GPS Coordinates: | 43°11'30"N by 79°10'15"W |
Operator/Owner: | Niagara District Airport Commission |
Airport Type: | Public |
Elevation: | 321 feet (98 meters) |
# of Runways: | 3 |
View all routes: | Routes from YCM |
More Information: | YCM Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | PSM / KPSM |
Airport Name: | Portsmouth International Airport at Pease |
Location: | Portsmouth, New Hampshire, United States |
GPS Coordinates: | 43°4'41"N by 70°49'23"W |
Area Served: | Portsmouth, New Hampshire |
Operator/Owner: | Pease Development Authority |
Airport Type: | Public / Military |
Elevation: | 100 feet (30 meters) |
# of Runways: | 1 |
View all routes: | Routes from PSM |
More Information: | PSM Maps & Info |
Facts about St. Catharines/Niagara District Airport (YCM):
- Because of St. Catharines/Niagara District Airport's relatively low elevation of 321 feet, planes can take off or land at St. Catharines/Niagara District 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.
- In 1929, the facilities were described by the S.C.F.C.
- The furthest airport from St. Catharines/Niagara District Airport (YCM) is Margaret River Airport (MGV), which is located 11,437 miles (18,406 kilometers) away in Margaret River, Western Australia, Australia.
- St. Catharines/Niagara District Airport (YCM) has 3 runways.
- With the outbreak of World War II many flying clubs, including the S.C.F.C, saw their resources being stretched to the limit.
- The closest airport to St. Catharines/Niagara District Airport (YCM) is Niagara Falls International Airport (IAG), which is located only 13 miles (21 kilometers) ESE of YCM.
Facts about Portsmouth International Airport at Pease (PSM):
- The closest airport to Portsmouth International Airport at Pease (PSM) is Sanford Seacoast Regional Airport (SFM), which is located 23 miles (36 kilometers) NNE of PSM.
- Portsmouth International Airport at Pease covers an area of 3,000 acres at an elevation of 100 feet above mean sea level.
- It shares the runway with the Pease Air National Guard Base, which is actively utilized by the 157th Air Refueling Wing of the New Hampshire Air National Guard, an Air Mobility Command -gained Air National Guard unit operating the KC-135R Stratotanker aircraft.
- The furthest airport from Portsmouth International Airport at Pease (PSM) is Margaret River Airport (MGV), which is located 11,729 miles (18,875 kilometers) away in Margaret River, Western Australia, Australia.
- Portsmouth International Airport at Pease (PSM) currently has only 1 runway.
- Because of Portsmouth International Airport at Pease's relatively low elevation of 100 feet, planes can take off or land at Portsmouth International Airport at Pease 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.