I am looking to possibly change an Avios/RFS Club Europe booking, currently to depart 1945 12th Aug. I looked at the change option on ba.com and it seems to be allowing me to change to a flight that departs well within 24 hrs from now. Are changes allowed up until 24hr before departure based on the currently booked flight? That way allowing the change above would make sense, or is it that the flight you wish to change to should be at least 24 hours away? Maybe ba.com is actually giving me the right answer here and it's up until 24 before the current departure time. Hmmmm, not sure?? Appreciate some clarification.