Nonstop flight route between Port Heiden, Alaska, United States and 108 Mile Ranch, British Columbia, Canada:
Departure Airport:
 
    Arrival Airport:
 
    Distance from PTH to ZMH:
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- About this route
- PTH Airport Information
- ZMH Airport Information
- Facts about PTH
- Facts about ZMH
- Map of Nearest Airports to PTH
- List of Nearest Airports to PTH
- Map of Furthest Airports from PTH
- List of Furthest Airports from PTH
- Map of Nearest Airports to ZMH
- List of Nearest Airports to ZMH
- Map of Furthest Airports from ZMH
- List of Furthest Airports from ZMH
About this route:
A direct, nonstop flight between Port Heiden Airport (PTH), Port Heiden, Alaska, United States and South Cariboo Regional Airport (ZMH), 108 Mile Ranch, British Columbia, Canada would travel a Great Circle distance of 1,524 miles (or 2,453 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 Port Heiden Airport and South Cariboo Regional Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
| IATA / ICAO Codes: | PTH / PAPH | 
| Airport Names: | 
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| Location: | Port Heiden, Alaska, United States | 
| GPS Coordinates: | 56°57'33"N by 158°37'59"W | 
| Area Served: | Port Heiden, Alaska | 
| Operator/Owner: | State of Alaska DOT&PF - Central Region | 
| Airport Type: | Public | 
| Elevation: | 95 feet (29 meters) | 
| # of Runways: | 2 | 
| View all routes: | Routes from PTH | 
| More Information: | PTH Maps & Info | 
Arrival Airport Information:
| IATA / ICAO Codes: | ZMH / CZML | 
| Airport Names: | 
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| Location: | 108 Mile Ranch, British Columbia, Canada | 
| GPS Coordinates: | 51°44'12"N by 121°19'58"W | 
| Operator/Owner: | Cariboo Regional District | 
| Airport Type: | Public | 
| Elevation: | 3129 feet (954 meters) | 
| # of Runways: | 1 | 
| View all routes: | Routes from ZMH | 
| More Information: | ZMH Maps & Info | 
Facts about Port Heiden Airport (PTH):
- Port Heiden Airport (PTH) has 2 runways.
- Beginning in 1958 the airport was used to support Port Heiden Air Force Station, a Cold War United States Air Force Distant Early Warning Line radar station.
- The furthest airport from Port Heiden Airport (PTH) is George Airport (GRJ), which is located 10,850 miles (17,462 kilometers) away in George, South Africa.
- Because of Port Heiden Airport's relatively low elevation of 95 feet, planes can take off or land at Port Heiden 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 Port Heiden Airport (PTH) is Chignik Fisheries Airport (KCG), which is located 44 miles (71 kilometers) S of PTH.
- In addition to being known as "Port Heiden Airport", other names for PTH include "Port Heiden Air Force Station" and "Fort Morrow Army Airfield".
Facts about South Cariboo Regional Airport (ZMH):
- In addition to being known as "South Cariboo Regional Airport", other names for ZMH include "108 Mile Airport" and "South Cariboo/108 Mile Airport".
- The closest airport to South Cariboo Regional Airport (ZMH) is Williams Lake Airport (YWL), which is located 44 miles (70 kilometers) NW of ZMH.
- South Cariboo Regional Airport (ZMH) currently has only 1 runway.
- In 2011, the airport had a total of 963 plane arrivals and departures.
- The airport is located within walking distance of two resorts and an 18 hole PGA golf course.
- The furthest airport from South Cariboo Regional Airport (ZMH) is Tôlanaro Airport (FTU), which is located 10,492 miles (16,885 kilometers) away in Tôlanaro, Madagascar.




