Originally Posted by JackFlash

Thanks all - I will go through the dummy booking process. I'm assuming the 777-200ER hasn't been fitted out yet on this route with the new product? I couldn't find a recent thread tracking it for JFK.

Originally Posted by cynicalmoose

As to JFK, far from it - most of the time if it's 77x it's a 772, but it's very likely to be a 14F 772. As I read BASource, that means you have a 15:2 or 88% chance of new WT+ (assuming the flight is operated with an LHR-based aircraft). But you might end up with a 12F 772, in which case new WT+ is a 0% chance.

I don't think BA have anything like enough 77W to handle all the 777 JFK routes.