Back in 1981 (Dec), I flew a US Air (old name for US Airways) pass from Austin to east of Mississipi River cities. I believe it was either $299 or $349 (don't recall which price) and one can fly as much as one wanted for 3 weeks. It was cheaper than a RT ticket from AUS-DTW. I went to FNT, ITH, RDU, MCO & one more place. I grew up about 50 miles from FNT so I went there for Christmas break and saw friends in the other places.
When I went to the travel agency, they had a hard time finding the pass. It turned out to be on page 15.
No wonder they had a hard time finding it.
A very nice deal. AUS-DTW was approx $400 and the pass was cheaper. The only tax was the 10% excise tax built into the price.
I flew a wide variety of airplanes on the pass. Wish I remembered what ones at the time. Did alot of layovers in PIT in the old airport terminal.