Originally Posted by
lsumegan
It certainly sounds that way to me... (bolding mine)
SkyTeam Elite Plus (including Delta Diamond, Platinum or Gold Medallion) traveling in any cabin on a SkyTeam international flight* or a SkyTeam domestic flight connecting to/from a same-day international flight (includes same-day travel on a Delta domestic flight connecting to an international Delta—or any other SkyTeam partner—flight). If traveling on a domestic itinerary, please show a Delta Sky Club membership card for lounge access.
Yep, Canada will work for lounge access (as will Mexico). For completeness, the asterisk above excludes Caribbean destinations for lounge access.