JB is NOT always the cheapest, but the seats are the best.....I WAS disappointed that the DirectTV doesnt always work (over water, which means most of the flight to Aruba.) 

The new Terminal at JFK is the best airline terminal for seats/service/restos.  

On the negative side, JB doesnt have agreements with all airlines so if you are on JB and switching to another airline (hasnt happened yet) you MAY have to collect your suitcases to recheck.

I got the Amex JET BLUE card and signed up for the JB rewards program.  Its easy to get free tickets.  I flew to Mexico for free (I did pay for the...