Honolulu Airport Public Transportation

TheBus Route 19 and Route 20 both serve Daniel K. Inouye International Airport with direct service to Waikiki, operating from the second level of the main terminal near the center median. Route 19 runs along Hickam Air Force Base and Airport Boulevard before continuing through downtown, while Route 20 follows a coastal path through Kalihi and continues to Waikiki Beach. Both routes require passengers to handle their own luggage, and each bus accommodates two bags per rider without additional fees. The airport's SkyLine automated rail system opened partial service in 2025, connecting the Rental Car Center to Aloha Stadium and Pearl Harbor with plans for extension to Ala Moana Center. Passengers arriving at the main terminal take the free Wiki Wiki shuttle bus to the Rental Car Center station, where they transfer to the eastbound train. The rail accepts the same HOLO card used on TheBus, allowing seamless transfers within a two-hour window. Route E serves as an express connector during peak travel periods, running nonstop between the airport and Ala Moana Center with limited intermediate stops. This route operates weekdays from 5:30 AM to 8:30 PM and provides the fastest public transit option to central Honolulu's shopping and hotel district. Passengers boarding any route must have exact cash fare or a preloaded HOLO card, as drivers do not carry change or accept bills larger than twenty dollars. Overnight arrivals face longer wait times, as late-night bus frequency drops to hourly intervals after 10:00 PM. The terminal's ground transportation area remains staffed around the clock, with digital displays showing real-time arrival estimates for each route. Travelers carrying surfboards, bicycles, or oversized luggage should verify the bus rack availability before boarding, as space is limited during morning and evening commuter hours.