In the summer of 2006, during the Second Lebanon War, BA was being a bit wimpy and shuttling in via Cyprus. Lufthansa, who I use a great deal to Tel Aviv, were made of sterner stuff and continued with their schedule. Good on them. I have not flown to Israel using BA for many years (possibly over 30).
Lufthansa offer an excellent service from all parts of Europe via several hubs in Germany and many Jewish people use them despite historical reasons for being nervous. BA seem to forget that there is a part of the UK called 'outside the south east' and they ignore it at their cost.