Heading to Old Blighty in a few weeks to see friends. Any tips on nonrevving? I have benefits on UA and DL, and was thinking of flying into LHR and leaving from MAN (I'll be up north for part of my trip, and I understand loads out of MAN can be lighter?) I read about the 100-pound LHR departure tax, so might try to avoid departing from LHR.

I'm coming from SFO, so if I can't get on the US nonstops, it looks like MSP, SEA, and DTW are options on DL, or EWR/ IAD / ORD on UA. Any insider tips would be much appreciated.