Nonstop flight route between Philadelphia, Pennsylvania, United States and St. Mary's, Alaska, United States:

About this route:

A direct, nonstop flight between Philadelphia International Airport (PHL), Philadelphia, Pennsylvania, United States and St. Mary's Airport (KSM), St. Mary's, Alaska, United States would travel a Great Circle distance of 3,776 miles (or 6,077 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 Philadelphia International Airport and St. Mary's 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 Philadelphia International Airport and St. Mary's Airport. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

Arrival Airport Information:

Facts about Philadelphia International Airport (PHL):

• Philadelphia International Airport (PHL) has 4 runways.
• The April 1957 OAG shows 30 weekday departures on Eastern, 24 TWA, 24 United, 18 American, 16 National, 14 Capital, 6 Allegheny and 3 Delta.
• As a benefit to students, local schools including The University of Pennsylvania, Villanova University, Swarthmore College, Haverford College and Saint Joseph's University traditionally operate transportation shuttles to the airport during heavy travel periods such as spring and Thanksgiving breaks.
• Because of Philadelphia International Airport's relatively low elevation of 36 feet, planes can take off or land at Philadelphia International 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 furthest airport from Philadelphia International Airport (PHL) is Margaret River Airport (MGV), which is located 11,734 miles (18,884 kilometers) away in Margaret River, Western Australia, Australia.
• Starting in 1925 the Pennsylvania National Guard used the PHL site as a training airfield.
• Taxis charge a flat rate, currently $28.50 plus a fuel surcharge, for transportation from the airport to downtown Philadelphia.
• The closest airport to Philadelphia International Airport (PHL) is Philadelphia Seaplane BaseChandler Field (PSQ), which is located only 3 miles (5 kilometers) WSW of PHL.
• By 2005, there were two studies which dealt with expanding runway capacity at PHL airport.
• In the 1980s PHL hosted several hubs.

Facts about St. Mary's Airport (KSM):

• The furthest airport from St. Mary's Airport (KSM) is Cape Town International Airport (CPT), which is located 10,494 miles (16,889 kilometers) away in Cape Town, South Africa.
• Because of St. Mary's Airport's relatively low elevation of 312 feet, planes can take off or land at St. Mary's 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.
• St. Mary's Airport (KSM) has 2 runways.
• The closest airport to St. Mary's Airport (KSM) is Mountain Village Airport (MOU), which is located only 13 miles (20 kilometers) W of KSM.