Caribbean connection: Lines expand routes October 08, 2002 Share 1 -- NEW YORK -- In time for the high season and wintry weather, airlines are adding seasonal service to the Caribbean. Details are as follows:• Northwest Airlines will add Nassau to its route structure on Dec. 18 when it inaugurates daily seasonal service from Detroit. Northwest' s final flight will be April 5. A319 aircraft will be used on the route.• BWIA will launch Thursday roundtrips Oct. 31 from Washington (Dulles) to Tobago with continuing service to Trinidad. An introductory roundtrip fare of $350 must be booked by Nov. 15 for travel through Dec. 12.• Delta will add service from Atlanta to Providenciales, Turks and Caicos, and St. Maarten, effective Dec. 1. The airline also will increase its Atlanta departures to Aruba and add a nonstop Saturday flight from New York (Kennedy). From Cincinnati, Delta will introduce daily nonstop service to Nassau, also on Dec. 1.• Air Jamaica will launch nonstop service to Belize City from Montego Bay on Nov. 21. The flights will operate on Tuesdays, Thursdays, Saturdays and Sundays.• Seaborne Airlines added a midday flight between St. Thomas and San Juan, for a total of three roundtrips per day. In addition, the seaplane carrier launched daily service between St. Croix and Old San Juan's Pier 7, near the cruise-ship docks.• Club Med Columbus Isle, the Bahamas, will be served by weekly charter flights from New York and Miami this winter.• JRS Tours will operate a "Jamaica shuttle" charter service from Cleveland and Pittsburgh direct to Montego Bay, Jamaica. Service will be Fridays and Mondays from Dec. 20 through April 25.