Nonstop flight route between Chicago, Illinois, United States and Sofia, Bulgaria:

About this route:

A direct, nonstop flight between Chicago O'Hare International Airport (ORD), Chicago, Illinois, United States and Sofia Airport Vrazhdebna (SOF), Sofia, Bulgaria would travel a Great Circle distance of 5,198 miles (or 8,365 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 Chicago O'Hare 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 Chicago O'Hare 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 Chicago O'Hare International Airport (ORD):

• Ground was broken for the main terminal complex April 1, 1959.
• The airport was constructed in 1942–43 as a manufacturing plant for Douglas C-54s during World War II.
• The furthest airport from Chicago O'Hare International Airport (ORD) is Margaret River Airport (MGV), which is located 11,071 miles (17,817 kilometers) away in Margaret River, Western Australia, Australia.
• In 2013, the Chicago Department of Aviation appropriated a $19,500 two-year contract to use livestock, specifically goats, sheep, llamas, and burros, to assist with grounds maintenance.
• The closest airport to Chicago O'Hare International Airport (ORD) is Chicago Executive Airport (PWK), which is located only 9 miles (15 kilometers) N of ORD.
• Concourses B and C are linear concourses located in separate buildings parallel to each other.
• Because of Chicago O'Hare International Airport's relatively low elevation of 668 feet, planes can take off or land at Chicago O'Hare 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.
• Commercial passenger flights started in 1955 and by the following year O'Hare was served by American, BOAC, Braniff, Capital, Delta, Eastern, North Central, Pan Am, TWA and United, along with freight airlines Riddle and Slick.
• Chicago O'Hare International Airport (ORD) has 8 runways.

Facts about Sofia Airport Vrazhdebna (SOF):

• During the Second World War, the facilities were used by the military.
• 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.
• On 31 August 2006, Sofia Airport put its new runway system into operation, replacing the old and out-of-date facilities.
• 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.
• The new tower was officially opened on 7 December 2012.
• Sofia Airport Vrazhdebna handled 350,432 passengers last year.
• 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 (SOF) currently has only 1 runway.
• The terminal had substantially reached its capacity of some 600,000 passengers a year by the later 1960s and was subjected to a number of refurbishments and extensions beginning in the spring of 1968.
• In addition to being known as "Sofia Airport Vrazhdebna", other names for SOF include "Vrazhdebna Airport" and "Летище София".
• Options for different airport developments began to be examined in the mid-1960s.