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

About this route:

A direct, nonstop flight between Philadelphia International Airport (PHL), Philadelphia, Pennsylvania, United States and Sofia Airport Vrazhdebna (SOF), Sofia, Bulgaria would travel a Great Circle distance of 4,803 miles (or 7,730 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 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 Philadelphia International 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 Philadelphia International Airport (PHL):

• The second study, the PHL Capacity Enhancement Program has a much larger scope and is considering more drastic ways to increase runway capacity at PHL.
• SEPTA operates regional rail service between the airport and Center City Philadelphia via the Airport Line with stops at University City, Amtrak's 30th Street, Suburban, and Market East Stations.
• 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.
• Today Philadelphia International Airport is one of the busiest airports in the world and among the fastest growing in the United States.
• 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.
• One of the two newest terminal buildings at the airport, Concourse A West has a very modern and innovative design, made by Kohn Pedersen Fox, Pierce Goodwin Alexander & Linville, and Kelly/Maiello.
• On June 20, 1940, the airport's weather station became as the official point for Philadelphia weather observations and records by the National Weather Service.
• 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.
• 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.
• In June 1943 I Fighter Command transferred jurisdiction of the airport to the Air Technical Service Command.

Facts about Sofia Airport Vrazhdebna (SOF):

• 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.
• During the Second World War, the facilities were used by the military.
• In addition to being known as "Sofia Airport Vrazhdebna", other names for SOF include "Vrazhdebna Airport" and "Летище София".
• Sofia Airport Vrazhdebna handled 350,432 passengers last year.
• On 31 August 2006, Sofia Airport put its new runway system into operation, replacing the old and out-of-date facilities.
• 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.
• The closest airport to Sofia Airport Vrazhdebna (SOF) is Plovdiv Airport (PDV), which is located 86 miles (138 kilometers) ESE of SOF.
• A significant and recurring operational criticism of Sofia Airport has concerned its historical lack of all-weather operations capability.
• 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.
• Lufthansa Technik Sofia was founded in late 2007 as a joint venture between Lufthansa Technik and the Bulgarian Aviation Group.