Nonstop flight route between Harlingen, Texas, United States and Sofia, Bulgaria:

About this route:

A direct, nonstop flight between Valley International Airport (HRL), Harlingen, Texas, United States and Sofia Airport Vrazhdebna (SOF), Sofia, Bulgaria would travel a Great Circle distance of 6,379 miles (or 10,266 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 Valley 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 Valley 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 Valley International Airport (HRL):

• Valley International Airport is a city owned airport three miles northeast of Harlingen, in Cameron County, Texas.
• Valley International Airport (HRL) has 3 runways.
• The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a primary commercial service airport.Federal Aviation Administration records say the airport had 417,557 passenger boardings in calendar year 2008, 367,269 in 2009 and 373,438 in 2010.
• The closest airport to Valley International Airport (HRL) is Brownsville/South Padre Island International Airport (BRO), which is located 26 miles (42 kilometers) SSE of HRL.
• The furthest airport from Valley International Airport (HRL) is Sir Gaëtan Duval Airport (RRG), which is located 11,151 miles (17,946 kilometers) away in Rodrigues Island, Mauritius.
• Because of Valley International Airport's relatively low elevation of 36 feet, planes can take off or land at Valley 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.

Facts about Sofia Airport Vrazhdebna (SOF):

• 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.
• The construction of the new Sofia tower is related to the reconstruction and development of Sofia Airport and is the natural extension of the development of the airport complex.
• 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.
• 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.
• 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.