In Oct 1973, my wife and I were married. We went to Ireland for a Honeymoon. The priest who married us was also traveling there 2 days later. We met up at the Cliffs of Moher. We flew on Aer-Lingus 747 JFK-SNN (the latter was a major European hub then; there was no Dublin airport to speak of). Our flight - Economy, for both of us was $479 ! We were served today's First Class dinners on linen tablecloth and flatware (we still have it). The we got a series of snacks, multiple beverage carts, hot towels before landing, a full Irish breakfast. The Economy seats were spacious.
On our 50th wedding Anniversary we are flying Aer Lingus A321neo Business class outbound only with about the same 1973 percs. on the outbound leg only (PHL-DUB).Cost for Business out-Economy In- over $3500.