National air transport system:
number of registered air carriers: 12
inventory of registered aircraft operated by air carriers: 348
annual passenger traffic on registered air carriers: 65,482,307
annual freight traffic on registered air carriers: 11.297 billion mt-km (2015)

Civil aircraft registration country code prefix:
HL (2016)

Airports:
111 (2013)
country comparison to the world: 53
[see also: Airports country ranks ]

Airports - with paved runways:
total: 71
[see also: Airports - with paved runways - total country ranks ]
over 3,047 m: 4
[see also: Airports - with paved runways - over 3,047 m country ranks ]
2,438 to 3,047 m: 19
[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 ]
914 to 1,523 m: 13
[see also: Airports - with paved runways - 914 to 1,523 m country ranks ]
under 914 m: 23 (2017)
[see also: Airports - with paved runways - under 914 m country ranks ]

Airports - with unpaved runways:
total: 40
[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: 38 (2013)
[see also: Airports - with unpaved runways - under 914 m country ranks ]

Heliports:
466 (2013)
[see also: Heliports country ranks ]

Pipelines:
gas 2,216 km; oil 16 km; refined products 889 km (2013)

Railways:
total: 3,874 km
[see also: Railways - total country ranks ]
standard gauge: 3,874 km 1.435-m gauge (2,727 km electrified) (2015)
country comparison to the world: 48

Roadways:
total: 99,025 km
[see also: Roadways - total country ranks ]
paved: 91,195 km (includes 4,193 km of expressways)
[see also: Roadways - paved country ranks ]
unpaved: 7,830 km (2015)
[see also: Roadways - unpaved country ranks ]
country comparison to the world: 46

Waterways:
1,600 km (most navigable only by small craft) (2011)
country comparison to the world: 50
[see also: Waterways country ranks ]

Merchant marine:
total: 1,907
[see also: Merchant marine - total country ranks ]
by type: bulk carrier 100, container ship 89, general cargo 394, oil tanker 201, other 1,123 (2017)
country comparison to the world: 12

Ports and terminals:
major seaport(s): Busan, Incheon, Gunsan, Kwangyang, Mokpo, Pohang, Ulsan, Yeosu
container port(s) (TEUs): Busan (19,469,000), Kwangyang (2,327,000), Incheon (2,368,000) (2015)
LNG terminal(s) (import): Incheon, Kwangyang, Pyeongtaek, Samcheok, Tongyeong, Yeosu