I'm not sure this is the appropriate forum, but I hope someone can answer my question or direct me to the correct forum.

On Travelocity, I searched for a roundtrip from ORD-BKK Nov 18-Nov26, searching all airlines. The result was $1188 fare on DL. If I narrow the choices to UA I get a $626 fare. Shouldn’t the more general query bring up the cheapest fare? This is not the first time this has happened.

Thanks!