We did book on miles on Delta on this trip. We have another trip already booked on AA miles, and then after that, will definitely look at Jet Blue, yes..
Never heard it called OIA before, had to look it up!! We always call it MCO...
MCO is the 3 digit airport identifier, stands for McCoy Airport or Airfield, which is how it started, all signage is Orlando International Airport, or OIA, and that is how it is normally referred to on local news channels, Newspapers etc. Even as a local I normally use MCO as that is what you use when you book flights.
