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National Air Transport System

Number of registered air carriers: 8 (2020)

Inventory of registered aircraft operated by air carriers: 44

Annual passenger traffic on registered air carriers: 1,022,645 (2018)

Annual freight traffic on registered air carriers: 1.38 million (2018) mt-km

2,765 km gas, 346 km oil, 378 km refined products (2017)

total: 4,029 km (2020) 2,871 km electrifiedcomparison ranking: total 45

Total: 19,512 km (2011)

Paved: 19,235 km (2011) (includes 458 km of expressways)

Unpaved: 277 km (2011)

Note: does not include Category IV local roads

Total: 80 (2022)

By type: bulk carrier 3, general cargo 14, oil tanker 8, other 55

major seaport(s): Burgas, Varna (Black Sea)

Year	2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000

0
57
Civil airports
5
Military airports
6
Joint use civil-military airports
1
Other airports
45
Note
paved runways have a concrete or asphalt surface but not all have facilities for refueling, maintenance, or air traffic control; the length of a runway required for aircraft to safely operate depends on a number of factors including the type of aircraft, the takeoff weight (including passengers, cargo, and fuel), engine types, flap settings, landing speed, elevation of the airport, and average maximum daily air temperature; paved runways can reach a length of 5,000 m (16,000 ft.), but the â€œtypicalâ€ length of a commercial airline runway is between 2,500-4,000 m (8,000-13,000 ft.)