Laura, thanks for putting the Aerobus information on this thread. We're gonna do it! I put in a call to Praktik Rambla and they said they were a block away from the stop so we're just gonna suck it up and do it. We've only got 2 suitcases each (and maybe a shoulder bag with the laptop) and they roll easily so there you go!
Marilyn, I now understand what international travelers (non-US folks) go through when trying to find flights to the states!
Michael
Michael, perhaps we have more options than you do from Mexico, but we live in the North of England and that cuts down our options somewhat. We are driving the 200 miles or so to London Heathrow airport this time.