Skyline (Honolulu)

Skyline
A Skyline train departing Hālawa (Aloha Stadium) station
Overview
OwnerHonolulu Department of Transportation Services
LocaleCity and County of Honolulu
Termini
Stations9 (10 under construction, 2 planned)
Websitehonolulu.gov/skyline
honolulutransit.org
Service
TypeRapid transit
Operator(s)Hitachi Rail
Rolling stockHitachi Rail Italy Driverless Metro
Daily ridership3,300 (weekdays, Q1 2025)
Ridership1,151,000 (2024)
History
OpenedJune 30, 2023 (2023-06-30)
Technical
Line length10.8 mi (17.4 km)
Number of tracks2
CharacterElevated
Track gauge4 ft 8+12 in (1,435 mm) standard gauge
ElectrificationThird rail, 750 V DC
Operating speed55 mph (89 km/h)
Route map
Skyline highlighted in blue
Kualakaʻi (East Kapolei)
Keoneʻae (UH–West)
Honouliuli (Hoʻopili)
above
Route 93
Farrington Hwy
above
Route 76
Fort Weaver Rd
Hōʻaeʻae (West Loch)
Pouhala (Waipahu TC)
Maintenance facility
Hālaulani (Leeward CC)
H-1 / H-2
above
Route 99
Kamehameha Hwy
Waiawa (Pearl Highlands)
above H-1
Kalauao (Pearlridge)
above
Route 99
Kamehameha Hwy
Hālawa (Aloha Stadium)
opening 2025
Makalapa (JB Pearl Harbor–Hickam)
H-1 /
Route 92
Nimitz Hwy
Lelepaua (Honolulu Airport)
Āhua (Lagoon Drive)
above Dillingham Blvd
Kahauiki (Middle Street–Kalihi TC)
opening 2031
Mokauea (Kalihi)
Mauka shift
Niuhelewai (Honolulu CC–Kapalama)
above Dilingham Blvd
Kūwili (Iwilei)
above
Route 92
Nimitz Hwy
Hōlau (Chinatown)
Kuloloia (Downtown)
above Halekauwila Street
Ka‘ākaukukui (Civic Center)
planned extension
planned extension
Kūkuluae‘o (Kākāʻako)
Kālia (Ala Moana Center)

All stations are accessible

Skyline is a rapid transit system in the City and County of Honolulu on the island of Oʻahu, in the state of Hawaiʻi. Phase 1 of the project opened June 30, 2023 and lies entirely outside of the Urban Honolulu census-designated place, linking East Kapolei (on the ʻEwa Plain) and Aloha Stadium. Phase 2, connecting to Pearl Harbor and Daniel K. Inouye International Airport before reaching Middle Street, is scheduled to open October 1, 2025. The final phase, continuing the line across Urban Honolulu to Downtown, is due to open in 2031. Its construction constitutes the largest public works project in Hawaiʻi's history.

The 18.9-mile (30.4 km), automated fixed-guideway line was planned, designed, and constructed by the Honolulu Authority for Rapid Transportation (HART), a semi-autonomous government agency. Hitachi Rail, who also built the railcars used on the line, operates Skyline for the Honolulu Department of Transportation Services (which also manages the region's TheBus service). The almost entirely elevated line is the first large-scale, publicly run metro in the United States to feature platform screen doors and driverless trains. In 2024, the line had an annual ridership of 1,151,000, or about 3,300 per day as of the first quarter of 2025.