Originally Posted by
BearX220
ValuJet did neither, just changed its name to AirTran.
Well, not just change its name. It did buy AirTran and assumed that name some time in the aftermath of flight 592.
Other body snatchers include America West which is arguably the acquirer of both USAir and American, and Continental with United.
That list is about U.S airlines. One could expand it for other countries or continents.