Nonstop flight route between Portland, Maine, United States and Greymouth, New Zealand:
Departure Airport:

Arrival Airport:

Distance from PWM to GMN:
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- About this route
- PWM Airport Information
- GMN Airport Information
- Facts about PWM
- Facts about GMN
- Map of Nearest Airports to PWM
- List of Nearest Airports to PWM
- Map of Furthest Airports from PWM
- List of Furthest Airports from PWM
- Map of Nearest Airports to GMN
- List of Nearest Airports to GMN
- Map of Furthest Airports from GMN
- List of Furthest Airports from GMN
About this route:
A direct, nonstop flight between Portland International Jetport (PWM), Portland, Maine, United States and Greymouth Airport (GMN), Greymouth, New Zealand would travel a Great Circle distance of 9,404 miles (or 15,135 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 Portland International Jetport and Greymouth 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 Portland International Jetport and Greymouth Airport. You'll see that it will travel the same route of the red line on this map!
Departure 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 |
Arrival Airport Information:
IATA / ICAO Codes: | GMN / NZGM |
Airport Name: | Greymouth Airport |
Location: | Greymouth, New Zealand |
GPS Coordinates: | 42°27'42"S by 171°11'23"E |
Operator/Owner: | Grey District Council |
Airport Type: | Public |
Elevation: | 14 feet (4 meters) |
# of Runways: | 1 |
View all routes: | Routes from GMN |
More Information: | GMN Maps & Info |
Facts about Portland International Jetport (PWM):
- 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.
- That same year, regional Ransome Airlines, doing business as Delta Connection, began a route between Portland and Boston.
- That year regional Air New England began service in Portland, competing with Northeast Airlines intrastate and between Portland and Boston.
- Portland International Jetport (PWM) has 2 runways.
- The Jetport began construction on its expanded terminal as well as several infrastructure improvements in 2010.
- Boston-Maine Airways had a monopoly on passenger air travel at Portland, which continued after the airline was renamed Northeast Airlines.
- The closest airport to Portland International Jetport (PWM) is Naval Air Station Brunswick (NHZ), which is located 25 miles (40 kilometers) NE of PWM.
Facts about Greymouth Airport (GMN):
- Because of Greymouth Airport's relatively low elevation of 14 feet, planes can take off or land at Greymouth 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.
- The closest airport to Greymouth Airport (GMN) is Hokitika Airport (HKK), which is located 20 miles (33 kilometers) SSW of GMN.
- The furthest airport from Greymouth Airport (GMN) is Vigo Airport (VGO), which is nearly antipodal to Greymouth Airport (meaning Greymouth Airport is almost on the exact opposite side of the Earth from Vigo Airport), and is located 12,418 miles (19,985 kilometers) away in Vigo, Galicia, Spain.
- Greymouth Airport (GMN) currently has only 1 runway.