Compensation
I have a journey to the UK from a US regional airport (DAY) via a major US airport (PHL) and onwards to LHR. The original booking was first class for both legs of the journey, which are on the same airline. I am now informed that the service (loose term!) has been changed and that there is now no first class on the DAY - PHL segment. Because it is a through booking to LHR, can anyone give me a definitive answer on what EU regulations (if any) apply regarding compensation?