Spooky 2 TWA, UAL, PAA, WAL, DAL, EAL all have landed at the wrong airport at one time or another during the 60's. Some of these airlines have done it more than once.
The situational awareness of the cockpit of the 60's is not that of the cockpits today.
fatigue? Complacency? I don't know..! But how on earth does that even happen on a modern cockpit