On Sunday, SEA-BOS was oversold by 4. They started offering $400, eventually got up to $700. There was 1 no show, so they took 3 volunteers. We were re-routed SEA-ATL-BOS, getting to BOS 5 hours after the original flight, but our SEA-ATL flight got diverted to MEM due to weather. In the end, we got to BOS 8 hours after the original flight.