One thing you should know when flying to or from both JFK and Heathrow... they are busy airports. Thus = don't plan your connections too tight!
We were on the ground for more than an extra hour leaving, and circled over Heathrow for almost 1.5 hours upon arrival... thus the 6hr 50min flight hit almost 9 hours... which is still a drop in the bucket and I got a bit more rest!
I really like Virgin Atlantic Airlines.
The staff is friendly, seats clean and a bit more room than many other flights in Economy class. We got beverages and Worcester Sauce Flavour Mini Pretzels for a snack followed by a our meal. Do pick a meal on their website for a special meal -- I picked the low cholesterol/low fat meal and it was YUM (not dry or icky.) I often find that by selecting a meal ahead, you get better food and more fresh veggies/fruit. Worth a click or two in my book any day!
I settled in for some knitting (above right photo) and a movie - The Painted Veil - from their entertainment on demand selection.
Really a stellar flight.
I do recommend the train from Heathrow into Paddington over a taxi if you haven't too much to carry. The fare is only £15.50 (one way) and a taxi from there is easy (mine was £20.) Certainly cheaper than the cheapest fare I've seen at £57. Certainly a better bet when the exchange rate is 2-to-1 with our dollar being such junk right now.
Dinner time!! Ciao Ciao!