Originally Posted by
JetAirways77W
To make things even more confusing, AS does round-trips on the same flight number that count as two segments; e.g. SFO-(AS1352)-BOS-(AS1352)-SFO and SEA-(AS12)-BOS-(AS12)-SEA will count as two segments.
Why is that confusing? You can't buy a BOS-BOS ticket. You need to buy either a RT BOS-SEA or two one way tickets.