Nonstop flight route between Portsmouth, New Hampshire, United States and Northern Quebec, Canada:
Departure Airport:

Arrival Airport:

Distance from PSM to YAH:
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- About this route
- PSM Airport Information
- YAH Airport Information
- Facts about PSM
- Facts about YAH
- Map of Nearest Airports to PSM
- List of Nearest Airports to PSM
- Map of Furthest Airports from PSM
- List of Furthest Airports from PSM
- Map of Nearest Airports to YAH
- List of Nearest Airports to YAH
- Map of Furthest Airports from YAH
- List of Furthest Airports from YAH
About this route:
A direct, nonstop flight between Portsmouth International Airport at Pease (PSM), Portsmouth, New Hampshire, United States and La Grande-4 Airport (YAH), Northern Quebec, Canada would travel a Great Circle distance of 749 miles (or 1,205 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 Portsmouth International Airport at Pease and La Grande-4 Airport, the route shown on this map most likely still appears to be a straight line.
Departure 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 |
Arrival Airport Information:
IATA / ICAO Codes: | YAH / CYAH |
Airport Name: | La Grande-4 Airport |
Location: | Northern Quebec, Canada |
GPS Coordinates: | 53°45'16"N by 73°40'31"W |
Operator/Owner: | Hydro-Québec |
Airport Type: | Private |
Elevation: | 1005 feet (306 meters) |
# of Runways: | 1 |
View all routes: | Routes from YAH |
More Information: | YAH Maps & Info |
Facts about Portsmouth International Airport at Pease (PSM):
- Portsmouth International Airport at Pease (PSM) currently has only 1 runway.
- 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.
- 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.
- The airport is located within the Pease International Tradeport, a result of the ongoing redevelopment of the former Pease Air Force Base which was closed under Base Realignment and Closure Commission action in the late 1980s and early 1990s.
- 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.
- The airport served as a hub for Pan Am from 1998 until 2005, when all mainline Pan Am flights at the airport were suspended.
Facts about La Grande-4 Airport (YAH):
- La Grande-4 Airport (YAH) currently has only 1 runway.
- The furthest airport from La Grande-4 Airport (YAH) is Albany Airport (ALH), which is located 11,023 miles (17,739 kilometers) away in Albany, Western Australia, Australia.
- The closest airport to La Grande-4 Airport (YAH) is La Grande-3 Airport (YAR), which is located 104 miles (167 kilometers) W of YAH.