National air transport system:
number of registered air carriers: 2
[see also: National air transport system - number of registered air carriers country ranks ]
inventory of registered aircraft operated by air carriers: 10
[see also: National air transport system - inventory of registered aircraft operated by air carriers country ranks ]
annual passenger traffic on registered air carriers: 1,387,999
[see also: National air transport system - annual passenger traffic on registered air carriers country ranks ]
annual freight traffic on registered air carriers: 0 mt-km (2015)
[see also: National air transport system - annual freight traffic on registered air carriers country ranks ]

Civil aircraft registration country code prefix:
7O (2016)

Airports:
57 (2013)
country comparison to the world: 84
[see also: Airports country ranks ]

Airports - with paved runways:
total: 17
[see also: Airports - with paved runways - total country ranks ]
over 3,047 m: 4
2,438 to 3,047 m: 9
1,524 to 2,437 m: 3
914 to 1,523 m: 1 (2013)

Airports - with unpaved runways:
total: 40
[see also: Airports - with unpaved runways - total country ranks ]
over 3,047 m: 3
2,438 to 3,047 m: 5
1,524 to 2,437 m: 7
914 to 1,523 m: 16
under 914 m: 9 (2013)

Pipelines:
gas 641 km; liquid petroleum gas 22 km; oil 1,370 km (2013)
[see also: Pipelines country ranks ]

Roadways:
total: 71,300 km
[see also: Roadways - total (km) country ranks ]
paved: 6,200 km
[see also: Roadways - paved (km) country ranks ]
unpaved: 65,100 km (2005)
[see also: Roadways - unpaved (km) country ranks ]
country comparison to the world: 67

Merchant marine:
total: 5
by type: chemical tanker 2, petroleum tanker 2, roll on/roll off 1
registered in other countries: 14 (Moldova 4, Panama 4, Sierra Leone 2, Togo 1, unknown 3) (2010)
country comparison to the world: 126
[see also: Merchant marine country ranks ]

Ports and terminals:
major seaport(s): Aden, Al Hudaydah, Al Mukalla

Transportation - note:
the International Maritime Bureau reports offshore waters in the Gulf of Aden are high risk for piracy; numerous vessels, including commercial shipping and pleasure craft, have been attacked and hijacked both at anchor and while underway; crew, passengers, and cargo are held for ransom; the presence of several naval task forces in the Gulf of Aden and additional anti-piracy measures on the part of ship operators reduced the incidence of piracy in that body of water