A FlyerTalk Posting Legend
Join Date: Jul 2002
Location: MCI
Programs: AA Gold 1MM, AS MVP, UA Silver, WN A-List, Marriott LT Titanium, HH Diamond
Posts: 53,010
I thought a circle trip was a mostly out-of-date term for a multi-city itin that had no open jaws. A-B-C-A.
The only time I've seen it recently with any specific meaning is a few years back on one of the alliance-wide awards. A regional circle award or something like that...