Nonstop flight route between Portsmouth, New Hampshire, United States and San Diego / El Cajon, California, United States:
Departure Airport:

Arrival Airport:

Distance from PSM to SEE:
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- About this route
- PSM Airport Information
- SEE Airport Information
- Facts about PSM
- Facts about SEE
- 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 SEE
- List of Nearest Airports to SEE
- Map of Furthest Airports from SEE
- List of Furthest Airports from SEE
About this route:
A direct, nonstop flight between Portsmouth International Airport at Pease (PSM), Portsmouth, New Hampshire, United States and Gillespie Field (SEE), San Diego / El Cajon, California, United States would travel a Great Circle distance of 2,577 miles (or 4,148 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 Gillespie Field, 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 Gillespie Field. 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: | SEE / KSEE |
Airport Name: | Gillespie Field |
Location: | San Diego / El Cajon, California, United States |
GPS Coordinates: | 32°49'33"N by 116°58'20"W |
Area Served: | San Diego, California |
Operator/Owner: | County of San Diego |
Airport Type: | Public |
Elevation: | 388 feet (118 meters) |
# of Runways: | 3 |
View all routes: | Routes from SEE |
More Information: | SEE Maps & Info |
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.
- 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.
- 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 Gillespie Field (SEE):
- The furthest airport from Gillespie Field (SEE) is Sir Gaëtan Duval Airport (RRG), which is located 11,534 miles (18,562 kilometers) away in Rodrigues Island, Mauritius.
- Gillespie Field is a county-owned public airport 10 miles northeast of downtown San Diego, in El Cajon, San Diego County, California.
- Gillespie Field (SEE) has 3 runways.
- Because of Gillespie Field's relatively low elevation of 388 feet, planes can take off or land at Gillespie Field 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 closest airport to Gillespie Field (SEE) is Montgomery Field (MYF), which is located only 10 miles (16 kilometers) W of SEE.