Rental car is essential — the Big Island has no public transit network suited to visitors, and attractions are spread across an island larger than Connecticut. Two main airports serve visitors: Ellison Onizuka Kona International Airport (KOA) on the west side and Hilo International Airport (ITO) on the east side.
- Hele-On Bus: Hele-On is free through Dec. 31, 2028, and includes frequent service on some routes; check route schedules, as airport service is limited.
- Driving distances: Kona to Hilo is about 2 hours via Saddle Road or Hamakua Coast; a full island loop is roughly 225 miles.
- Summit travel on Maunakea requires 4WD or AWD; Waipiʻo access is restricted, and check road conditions and rental terms for other unpaved routes. — most rental agreements prohibit standard cars on these routes.