Chris Showell writes:

The article Boats, Aid and the Art of the Possible by Gary Hogan concludes with a comment that:

'...the quote "Asia is the place you fly over on your way to Europe" is often attributed to Keating, though we can find no reliable sources to suggest he ever said it. (Ed.)'

According to The Spectator (last para), the comment appears in The Hawke Memoirs (1994). Of course, you may have found that source already, and dismissed it as hearsay...

Ed. comment: No, we had not seen that one, though given the well known enmity between the two PMs, we make no comment on its veracity. Thanks for alerting us, Chris.