If you’re on Facebook, check out Galveston Saltwater Moms. They provide transportation from either airport to Galveston. We use the ships transfers to and from the airport and fly into HOU (it’s much closer). We fly in the day before and stay at a hotel near the airport with free shuttle to and from airport. Just take the shuttle back to airport morning of cruise and meet the Princess reps in baggage claim between 9 and 10 am.