If by direct you mean with a connection I see those but I didn't see any N/S Delta flights to SXM from BOS and also checked March....Tues/Wed/Thurs fares are decent but the w/e fares are up there

The $1500 referred to a non-stop as mentioned

Edit: The N/S is not showing up anymore and the connectors for the 11/5-12 flight are $1171 r/t

Changes daily