With all airlines in trouble these days, it’s even more
important to bring your dive essentials as carryons, especially
on puddle-jumper flights to Caribbean and Pacific islands.
Too often, luggage gets left behind for a day -- or five -- late.
Here are some recent examples of subscribers experiencing
lost luggage woes.
Edward Clapp (Corte Madera, CA) says American
  Airlines overbooked his flight, so he was offered travel
  vouchers, a seat on the the next evening’s flight, and
  expenses for the interim – but no guarantee that his bags
  would fly with him. “Four of my five bags arrived the day
  after I did, but the bag with crucial dive gear took two days.
  I met a family whose luggage had taken five days to catch up
  with them.” . . . After his Islena Air flight from San Pedro
  Sula to Plantation Beach Resort at Honduras’ Bay Islands in
  January, Don Beukers (San Jose, CA) didn’t see his luggage
  or dive gear for two days.  
We often get complaints about Cayman Airways. While
  all his bags made it with him to Brac Reef Beach Resort last
  November, Gary Malinowski (Oconomowoc, WI) says his
dive gear bag didn’t arrive back home until five days later. “It didn’t make the flight off Cayman Brac, even though the
  resort staff and the airline assured me and other passengers
  several times that there was plenty of room for our bags.” . .
  . Richard Visser (Grand Rapids, MI) had luggage delays on
  arrival at Little Cayman Beach Resort in November. “On
  the way back home, when our plane stopped in Cayman
  Brac, I looked out the window and was amazed to see my
  main suitcase being loaded off the plane and left there.
  I never received an explanation.” Leave plenty of time
  between the Cayman flight and your mainland connection,
  he says. “I had to fill out lost-luggage claim forms at the
  Grand Cayman airport, which made my connecting flight
  with Delta tight. That airport is a zoo on Saturday afternoons
  as many vacationers are leaving and arriving then.”
Even the big airlines mishandle luggage. On his January
  trip to Nadi, Fiji, Richard Rodriguez’ (Arlington, TX) luggage
  was lost by the baggage handlers at Los Angeles. “It
  didn’t show up for three days, so I had to use rental gear.”
  The more remote your dive destination, the smaller your
  plane’s cargo hold will be, and the more probable that some
  bags won’t make it on the flight. At the very least, bring
your computer and prescription-lens mask as carryons.