If WJ are named in the bilaterals between Canada and St. Lucia, Barbados, Jamaica, Mexico and the DR, then it is a 'flag' carrier. However, this is something I'd have to look up.
I'd have to look this up to, but I can tel you WS offers SCHEDULED service to;
Mexico, The DR, Jamaica, The Bahamas, Barbados, St. Lucia and 5 states of the union other than Hawaii.