Really good. But I need an "open jaws" option, i.e. fly from A to B and then C to A. Usually (at least on the routes I use) this gets priced at 1/2 the price of

Really good. But I need an "open jaws" option, i.e. fly from A to B and then C to A. Usually (at least on the routes I use) this gets priced at 1/2 the price of a round trip A-B plus 1/2 the price of a round trip A-C. Buying two one-way tickets is no substitute because it usually costs far more.