Originally Posted by WillFlyer
I thought it was IAD-LHR. I don't know how to confirm, though.
I'm pretty sure the first flight was LHR-East coast, because the LHR-East Coast flights are day time, which provided better press coverage. The same pomp couldn't occur on a 9pm departure IAD-LHR.
I spent a few minutes googling, and it was indeed LHR-IAD, #931.
http://www.boeing.com/news/frontiers...june/i_ca.html
http://www.boeing.com/commercial/777...ilestones.html
I wanna say that the second and third flights, which operated later that day, were domestic.