Originally posted by ChattavegasSE:
Oh yeah! I went 750+ mph in a passenger plane a few months ago. I wasn't flying it, I was on vacation but 750 nonetheless! :p
Passenger airliners do not break the speed of sound. Even though a lot could surpass it, the FAA does not allow it.
They normally cruise around 550 knots. (625mph)
If we want to talk my fastest speed. I've gone around Mach 1.4-1.5 (1100+mph)

F-16D off the eastern coast of Japan...