I posted a six-segment $339 CLL-BUF a few weeks back (no idea if it's still available, though):
UA/Star Alliance: 2019 Consolidated Mileage/Status/Challenge Runs help needed
Something similar may work for you, try search between two airports that don't have a common hub.
Sorry I'm at work on my lunch break, so I don't have time to find you specific examples. You may want to post your request in that thread.