Looks as though Thomas Cook are flying twice a week to Orlando from the end of May. Was looking as though Dubai was going to overtake it as the busiest long haul route but given the shear number of flights on it this summer I am not so sure.
BA - 13 weekly 772
DU - 2 weekly 788
TCX - 2 weekly 332
TOM - 2 weekly 788 (SFB)
VS - 18 weekly 744
Factor in the following from Stansted:
TCX - 10 weekly 332
TOM - 1 weekly 788 (SFB)
Looks as though London to Orlando will be the busiest it has been in some time this year!