We had reservations on Island Air from Kauai to Honolulu. We would have had 2 1/2 hours to catch our connecting flight from Honolulu to Spokane on Allegiant. Island Air cancelled the flight due to weather. The next flight an hour later was cancelled due to mechanical issues. They had no other flights that would get us to our connecting flight on time. Island Air could not re-schedule our flight on another airline until they could confirm Allegiant's *** time (???) Allegiant is not affiliated with or have agreements with any other airline so no other airline can pull up their information through their system. Allegiant only flies out of Honolulu once a week so if you miss the flight, you're out of luck. Island Air staff is so incompetent!! They could googled Allegiant for flight information but I don't think they knew how. They were putting people on Hawaiian Airlines so they could meet connecting flights but couldn't figure out how to do if for us. They told us we were not priority! We spent 15 hours in the Kauai airport before getting a flight back to Spokane (on Alaska). We will never fly Island Air again. Their departure history terrible. We were told by their staff that they only have 4 airplanes and they have mechanical issues all the time. Spend you hard earned money on a reliable airline like Alaska!