Hi,

Planning to go beginning April PHX-LHR-HAJ and Mid April the reverse. Booked it a few of month back and so far the times have changed a few minutes and the aircraft changed from a A350 to a 777 (thankfully new Club is shown).
Do you think that the flight schedule for April is "set in stone" or does BA tent to make constant changes?

Thanks! Just want to know how much time I should spend investigating alternative flights