Nonstop flight route between Houlton, Maine, United States and Sofia, Bulgaria:

About this route:

A direct, nonstop flight between Houlton International Airport (HUL), Houlton, Maine, United States and Sofia Airport Vrazhdebna (SOF), Sofia, Bulgaria would travel a Great Circle distance of 4,245 miles (or 6,831 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 Houlton 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 Houlton 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 Houlton International Airport (HUL):

• The airport originated as Houlton Army Air Base.
• The closest airport to Houlton International Airport (HUL) is Northern Maine Regional Airport at Presque Isle (PQI), which is located 41 miles (66 kilometers) NNW of HUL.
• Because of Houlton International Airport's relatively low elevation of 489 feet, planes can take off or land at Houlton 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.
• Houlton International Airport is a public-use airport located two miles east of Houlton, Maine, in the town of Houlton in Aroostook County, Maine, United States, on the border of New Brunswick, Canada.
• Houlton International Airport (HUL) has 2 runways.
• The furthest airport from Houlton International Airport (HUL) is Albany Airport (ALH), which is located 11,611 miles (18,686 kilometers) away in Albany, Western Australia, Australia.

Facts about Sofia Airport Vrazhdebna (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 mid-2012 the airport will have one of the most modern and most beautiful airport towers in Europe.
• Terminal 2 was officially opened on 27 December 2006 with the symbolic arrival of Bulgaria Air flight FB 408 from Brussels.
• 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.
• In addition to being known as "Sofia Airport Vrazhdebna", other names for SOF include "Vrazhdebna Airport" and "Летище София".
• 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.
• A significant and recurring operational criticism of Sofia Airport has concerned its historical lack of all-weather operations capability.