I'll conveniently forget the year, but I spent a summer working at the BOAC ticket office in Newcastle, during which time Dan-Air had a Saturday Ambassador flight to the Isle of Man via Carlisle. The Newcastle-Carlisle one-way fare was a modest eighteen shillings (90p) and no taxes.
Every week for ten weeks I told myself that I would make the trip the following weekend (fly there, come back on the train) and every weekend I put it off - until my posting was finished and I had missed out.