Originally Posted by
megaloman
It doesn't matter who sells the ticket, operating carrier matters. EU261 applies to *all* airlines departing from the EU and to European airlines departing from outside of the EU. So:
LHR-IAD operated by AA - EU261 works
LHR-IAD operated by BA - EU262 works
IAD-LHR operated by AA - EU261 doesn't work
IAD-LHR operated by BA - EU261 works
Ah, thanks! I never realised it was only departing from EU, not arriving into EU as any carrier.