Hi all,

First time on this site....

I've done a lot of long-haul flying over the years but I've never been part of any frequent flyer programme or anything....however I'm flying round-trip London to Atlanta this month, and wondered how does one go about getting a seat upgrade?? I have Amex Platinum card points, but Amex say its up to the airline as to whether I can use Amex points to upgrade.

Free would obviously be great, but I'm prepared to pay - what's the best way to get an upgrade to business class? I'm flying economy Air France & Delta (Delta being the longest leg: Paris to Atlanta).

Any advice?

Thanks...