Nonstop flight route between Port Williams, Kodiak Island Borough, Alaska, United States and Marathon, Ontario, Canada:
Departure Airport:

Arrival Airport:

Distance from KPR to YSP:
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- About this route
- KPR Airport Information
- YSP Airport Information
- Facts about KPR
- Facts about YSP
- Map of Nearest Airports to KPR
- List of Nearest Airports to KPR
- Map of Furthest Airports from KPR
- List of Furthest Airports from KPR
- Map of Nearest Airports to YSP
- List of Nearest Airports to YSP
- Map of Furthest Airports from YSP
- List of Furthest Airports from YSP
About this route:
A direct, nonstop flight between Port Williams Seaplane Base (KPR), Port Williams, Kodiak Island Borough, Alaska, United States and Marathon Aerodrome (YSP), Marathon, Ontario, Canada would travel a Great Circle distance of 2,677 miles (or 4,309 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 Port Williams Seaplane Base and Marathon Aerodrome, 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 Port Williams Seaplane Base and Marathon Aerodrome. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | KPR / |
Airport Name: | Port Williams Seaplane Base |
Location: | Port Williams, Kodiak Island Borough, Alaska, United States |
GPS Coordinates: | 58°29'24"N by 152°34'55"W |
Area Served: | Port Williams, Alaska |
Operator/Owner: | Washington Fish & Oyster |
Airport Type: | Public |
Elevation: | 0 feet (0 meters) |
# of Runways: | 1 |
View all routes: | Routes from KPR |
More Information: | KPR Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | YSP / CYSP |
Airport Name: | Marathon Aerodrome |
Location: | Marathon, Ontario, Canada |
GPS Coordinates: | 48°45'25"N by 86°20'44"W |
Operator/Owner: | Corporation of the Town of Marathon |
Airport Type: | Public |
Elevation: | 1032 feet (315 meters) |
# of Runways: | 1 |
View all routes: | Routes from YSP |
More Information: | YSP Maps & Info |
Facts about Port Williams Seaplane Base (KPR):
- Port Williams Seaplane Base (KPR) currently has only 1 runway.
- The closest airport to Port Williams Seaplane Base (KPR) is Kitoi Bay Seaplane Base (KKB), which is located 22 miles (35 kilometers) SSE of KPR.
- The furthest airport from Port Williams Seaplane Base (KPR) is Port Elizabeth International Airport (PLZ), which is located 10,742 miles (17,287 kilometers) away in Port Elizabeth, South Africa.
- Because of Port Williams Seaplane Base's relatively low elevation of 0 feet, planes can take off or land at Port Williams Seaplane Base 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.
Facts about Marathon Aerodrome (YSP):
- Marathon Aerodrome (YSP) currently has only 1 runway.
- The closest airport to Marathon Aerodrome (YSP) is Manitouwadge Airport (YMG), which is located 31 miles (51 kilometers) NE of YSP.
- The furthest airport from Marathon Aerodrome (YSP) is Margaret River Airport (MGV), which is located 10,934 miles (17,597 kilometers) away in Margaret River, Western Australia, Australia.