National air transport system:
number of registered air carriers: 8
inventory of registered aircraft operated by air carriers: 44
annual passenger traffic on registered air carriers: 1,118,689
annual freight traffic on registered air carriers: 1,583,340 mt-km (2015)

Civil aircraft registration country code prefix:
LZ (2016)

Airports:
68 (2013)
country comparison to the world: 73
[see also: Airports country ranks ]

Airports - with paved runways:
total: 57
[see also: Airports - with paved runways - total country ranks ]
over 3,047 m: 2
[see also: Airports - with paved runways - over 3,047 m country ranks ]
2,438 to 3,047 m: 17
[see also: Airports - with paved runways - 2,438 to 3,047 m country ranks ]
1,524 to 2,437 m: 12
[see also: Airports - with paved runways - 1,524 to 2,437 m country ranks ]
under 914 m: 26 (2017)
[see also: Airports - with paved runways - under 914 m country ranks ]

Airports - with unpaved runways:
total: 11
[see also: Airports - with unpaved runways - total country ranks ]
914 to 1,523 m: 2
[see also: Airports - with unpaved runways - 914 to 1,523 m country ranks ]
under 914 m: 9 (2013)
[see also: Airports - with unpaved runways - under 914 m country ranks ]

Heliports:
1 (2013)
[see also: Heliports country ranks ]

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

Railways:
total: 5,114 km
[see also: Railways - total country ranks ]
standard gauge: 4,989 km 1.435-m gauge (2,880 km electrified)
narrow gauge: 125 km 0.760-m gauge (2014)
country comparison to the world: 37

Roadways:
total: 19,512 km
[see also: Roadways - total country ranks ]
paved: 19,235 km (includes 458 km of expressways)
[see also: Roadways - paved country ranks ]
unpaved: 277 km
[see also: Roadways - unpaved country ranks ]
note: does not include Category IV local roads (2011)
country comparison to the world: 111

Waterways:
470 km (2009)
country comparison to the world: 83
[see also: Waterways country ranks ]

Merchant marine:
total: 80
[see also: Merchant marine - total country ranks ]
by type: bulk carrier 2, general cargo 18, oil tanker 8, other 52 (2017)
country comparison to the world: 95

Ports and terminals:
major seaport(s): Burgas, Varna (Black Sea)