I can book this flight (CLT-LHR) in B for $1221.60. If I understand correctly, 25,000 miles each will get us upgraded to BE. If I call Delta Skymiles, can they go ahead and confirm our upgrade to BE when I book the tickets? This is a bit less than paying for BE going through JFK, but a LOT less than if we were to travel through ATL and pay for BE.

Which brings me to my second question: If you had a choice ... would you transfer at JFK or ATL?

Also on the 767 400ER ... which side is better? A or D I'm planning to put DH in front or behind me on the window as we don't talk much inflight (and if I don't like my seat I can change with him).

Thanks for all the help. We have the 25,000 miles, so we don't have an issue doing this IF it can be done.