More distant seasteads may wish to fly people in and out using planes or helicopters. A several hundred mile trip would only take an hour or two of flight time, and even a seastead in the middle of the ocean should be reachable in half a day or less. While this method is much quicker, its also more expensive and requires more infrastructure. Seaplanes can land on the ocean, but only in very calm or protected waters. Regular planes require a long runway. Helicopters only need a small landing deck, however they are more expensive and dangerous than airplanes.