Something to consider, which may work for some, is to take a voluntary overnight on the way home. If time and budget permits, perhaps breaking up the return trip by overnighting in Miami and having a nice dinner in South Beach may work. Or Lauderdale, or Atlanta, etc. It will take the pressure off of clearing Immigration and Customs and then making a connecting flight, and it will open up a whole range of flights for the next day. I understand that doing this is out of the question for many, but it may work for some. Something to consider.