Upon calling KLM, they informed me that online I was informed that the KLM flight was operated by Delta?? I didn't see that and its not on any of my printed booking documents, as it must have been in fine fine print? This is BS, we fly USA airlines all year and are sick of them, thus we always book EU flights, and upon printed my boarding we fine out its Delta. They should declare this in big print so as to not deceive customers and consumers. Is everybody okay with this?