[boultonmark]

Such linkbait nonsense. Lesser known but brilliant Icelandic search engine dohop.com in particular has being finding all these options for over ten years. e.g http://www.dohop.com/flights/?d1=190116&d2=&a1=SFO%2CSJC%2CO...

[greglindahl]

Even weaker, the example in the post is a bad one! Kayak has suggested going from SFO to London via LAX to me several times.