Nonstop flight route between Portsmouth, New Hampshire, United States and Leinster, Western Australia, Australia:
Departure Airport:

Arrival Airport:

Distance from PSM to LER:
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- About this route
- PSM Airport Information
- LER Airport Information
- Facts about PSM
- Facts about LER
- 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 LER
- List of Nearest Airports to LER
- Map of Furthest Airports from LER
- List of Furthest Airports from LER
About this route:
A direct, nonstop flight between Portsmouth International Airport at Pease (PSM), Portsmouth, New Hampshire, United States and Leinster Airport (LER), Leinster, Western Australia, Australia would travel a Great Circle distance of 11,203 miles (or 18,030 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 Portsmouth International Airport at Pease and Leinster 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 Portsmouth International Airport at Pease and Leinster Airport. You'll see that it will travel the same route of the red line on this map!
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: | LER / YLST |
Airport Name: | Leinster Airport |
Location: | Leinster, Western Australia, Australia |
GPS Coordinates: | 27°50'35"S by 120°42'11"E |
Operator/Owner: | BHP Billiton Nickel West |
Airport Type: | Public |
Elevation: | 1631 feet (497 meters) |
# of Runways: | 1 |
View all routes: | Routes from LER |
More Information: | LER Maps & Info |
Facts about Portsmouth International Airport at Pease (PSM):
- 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.
- Pease was one of 7 Launch Abort Sites and one of 18 Emergency Landing Sites for NASA space shuttle orbiters.
- 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 airport served as a hub for Pan Am from 1998 until 2005, when all mainline Pan Am flights at the airport were suspended.
- 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.
- 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 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.
Facts about Leinster Airport (LER):
- The furthest airport from Leinster Airport (LER) is L.F. Wade International Airport (BDA), which is located 11,989 miles (19,294 kilometers) away in Ferry Reach (near Hamilton), Bermuda.
- The closest airport to Leinster Airport (LER) is Mount Keith Airport (WME), which is located 40 miles (64 kilometers) NNW of LER.
- Leinster Airport (LER) currently has only 1 runway.