I have a flight from BWI-LHR on Economy and when I tried to upgrade they said that I had to do it through my TA (booked as part of a cruise).

I didn't realize that they don't let you upgrade to the Plus like United does from Economy --> Economy Plus for about $125 or so. I'm scared to see how much they want to rebook the whole ticket.

The agent from BA said as it got closer to the date that they MIGHT have a seat and be willing to do it for that $125 or whatever.

Does anyone have experience in this?

Nice TR btw.