Originally Posted by
jrl767
the three obvious ones are Honolulu, Idlewild, and LaGuardia ... for #4, I'm thinking that UA was serving Vancouver BC whose airport is on Sea Island south of the city ... and for #5 I'll guess that, in 1953, Oakland airport was actually on Alameda Island in SF Bay
9. Not bad! You've correctly guessed four out of five. However, we are not looking for Oakland (OAK) here, we are looking for another airport that is still in existence but no longer has any scheduled passenger service. And here's another hint: think short haul.