Nonstop flight route between Philadelphia, Pennsylvania, United States and Sofia, Bulgaria:

About this route:

A direct, nonstop flight between Northeast Philadelphia Airport (PNE), Philadelphia, Pennsylvania, United States and Sofia Airport Vrazhdebna (SOF), Sofia, Bulgaria would travel a Great Circle distance of 4,785 miles (or 7,700 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 Northeast Philadelphia Airport and Sofia Airport Vrazhdebna, 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 Northeast Philadelphia Airport and Sofia Airport Vrazhdebna. 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 Northeast Philadelphia Airport (PNE):

• The airport was the headquarters and maintenance facility for Ransome Airlines, which operated scheduled passenger flights as Allegheny Commuter to Washington D.C.
• Northeast Philadelphia Airport (PNE) has 2 runways.
• This airport covers 1,240 acres, bounded by Grant Avenue to the south, Academy Road to the east, Comly Road to the north, and the Roosevelt Boulevard to the west.
• Northeast Philadelphia Airport started in the 1930s as the Northeast Airport, a grass field with no paved runways, one of three small airports in the area.
• The furthest airport from Northeast Philadelphia Airport (PNE) is Margaret River Airport (MGV), which is located 11,736 miles (18,888 kilometers) away in Margaret River, Western Australia, Australia.
• Northeast Philadelphia Airport covers 1,150 acres at an elevation of 121 feet above mean sea level.
• The closest airport to Northeast Philadelphia Airport (PNE) is NAS JRB Willow Grove (NXX), which is located only 11 miles (18 kilometers) NW of PNE.
• Because of Northeast Philadelphia Airport's relatively low elevation of 121 feet, planes can take off or land at Northeast Philadelphia 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.

Facts about Sofia Airport Vrazhdebna (SOF):

• The passenger terminal building is designed with a capacity of 2,000 peak hour passengers or up to 2.6 million passengers a year, plus 26,000 tonnes of luggage.
• A significant and recurring operational criticism of Sofia Airport has concerned its historical lack of all-weather operations capability.
• The closest airport to Sofia Airport Vrazhdebna (SOF) is Plovdiv Airport (PDV), which is located 86 miles (138 kilometers) ESE of SOF.
• Sofia Airport Vrazhdebna handled 350,432 passengers last year.
• The furthest airport from Sofia Airport Vrazhdebna (SOF) is Chatham Islands (CHT), which is located 11,437 miles (18,405 kilometers) away in Waitangi, Chatham Islands, New Zealand.
• In 2004 Strabag demanded an additional 6 million euro due to rising steel prices.
• In addition to being known as "Sofia Airport Vrazhdebna", other names for SOF include "Vrazhdebna Airport" and "Летище София".
• A lot of consideration has been given to the design of the layout, the functional definition of the working positions, the operations room surface area for ANS provision and meteorological observation, as well as to the requirements for visibility to the runway and the approaches and access to an open observation platform.
• Sofia Airport Vrazhdebna (SOF) currently has only 1 runway.