Originally Posted by
woglet86
It doesn't seem ideal they could discharge their obligations and avoid compensation simply by offering a LGW-LHR connection when the original was LGW-LGW, but I personally wouldn’t be put out enough to argue for anything.
If BA (on their own initiative) rebooks you on a new itinerary which involves an airport change when the previous itinerary had none, I would hope they would reimburse reasonable travel expenses between the airports. (But, that is separate from “compensation”.)