Interline baggage on Separate Tickets (UA -> LH) - will this work?
My family is planning on flying from SFO to FRA via LHR on two separate round trip tickets (SFO-LHR & LHR-FRA). SFO-LHR is on United (UA) while LHR-FRA is on Lufthansa. Will we be able to check bags all the way through when we check in at SFO? Connecting time is LHR is 3 1/2 hours which could be a problem if we need to clear customs, get bags then check in and go back through security. I believe we can check all the way through since it is all within *A but want to be sure. Alternate we can fly second leg on BA which leaves a few hours later (but costs a lot more).