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):

• Houlton International Airport (HUL) has 2 runways.
• 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.
• 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.
• The airport originated as Houlton Army Air Base.
• 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.

Facts about Sofia Airport Vrazhdebna (SOF):

• The closest airport to Sofia Airport Vrazhdebna (SOF) is Plovdiv Airport (PDV), which is located 86 miles (138 kilometers) ESE of 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.
• The project for the construction of a new airport control tower at Sofia Airport commenced on 16 June 2006 with a decision of the BULATSA Management Board.
• On 19 August 2011 in the presence of Ivaylo Moskovski, minister of transport, information technology and communications, the BULATSA director general Diyan Dinev, Glavbolgarstroy AD chief executive director Pavel Kalistratov and Glavbolgarstroy AD executive director and management board member Nina Stoyanova signed the design execution and construction contract between BULATSA and Glavbolgarstroy AD for the new control tower at Sofia Airport.
• Sofia Airport Vrazhdebna (SOF) currently has only 1 runway.
• 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.
• A significant and recurring operational criticism of Sofia Airport has concerned its historical lack of all-weather operations capability.