Lawson remained a star in the WHA, almost entirely with the Blazers' franchise through moves from Philadelphia to Vancouver and finally to Calgary. Midway through the 1977 season he was traded to the Winnipeg Jets and reached the Avco Cup final, where the Jets lost to the Quebec Nordiques, after which Lawson retired. In the NHL, Lawson appeared in 219 games, scoring 28 goals and 29 assists. However, in the WHA he played in 392 games, scoring 218 goals and adding 204 assists. Despite not participating in the final two seasons of the WHA's existence he still finished at #8 in all-time WHA goals.