Originally Posted by
cloud-nine
I was wondering something very similar.
We booked cheap economy flights a few months ago as I couldn't find reward tickets which worked with when we needed to be away (flying LHR to JFK and then back from DC in Nov).
I've checked fairly regularly since and all I can find in terms of reward availability (which I think has to be available if we were going to upgrade?) is WT+ on the way back, although there are other options on other flights that day. I'm assuming though that we have no option other than to wait and hope availability pops up at some point... (unlikely)
If you booked cheap economy (not Y,B,H class) you aren't able to upgrade with avios. You might get an offer to upgrade with cash in Manage my Booking, but for an open-jaw possibly not. Phoning to ask about a POUG or cash at the airport are possibilities.