Originally Posted by
JerseyCityS
The oldest 747 they are flying was delivered in 1990. They recently retire the earliest delivered in 1989.
I can find no other aircraft in the fleet delivered before 1990 currently flying, making the 747-400 the oldest, and the 767-300 the second oldest.
757 is the oldest.
Also, UA has several newer 747's. The majority late 90's delivery.