Kauai’s main airport is Lihue Airport (LIH) in southeastern Lihue. Many airlines now offer non-stop service to Kauai. There is also the option of flying into Honolulu International Airport (HNL) on Oahu first and then heading to Kauai.
Ground transportation on Kauai includes rental cars, hotel shuttles and taxis. Several companies provide guided tours aboard motor coaches, mini-buses, vans, 4-wheel drive vehicles and limousines. Shuttles and tours are also available, though stops will be limited.
Kauai also has limited bus service, but if you’re planning to really explore the island, it’s best to rent a car to keep your schedule flexible. Kauai's a circular island and one major highway nearly circles it, beginning in Lihue and going north, Kuhio Highway (Hwy. 56) goes to Kee Beach past Hanalei. Going to the West Side, Kaumualii Highway (Hwy. 50) travels to Kekaha. Every major rental car company is represented here.
With a minimum of traffic lights, everyone on Kauai follows "aloha" traffic customs. Remember to drive slowly, yield to others and don’t tailgate. At one-lane bridges, yield to oncoming traffic. If you are in the oncoming traffic and there is a line waiting on the other side, stop and let your neighbors cross. It's much more laid-back here than driving on the mainland, so relax, enjoy the scenery and drive safely.