Delta Air Lines Inc. will add 12 new daily flights from New York to 11 domestic and Caribbean destinations in spring and summer 2012.

In March, Atlanta-based Delta will add new frequencies between New York-JFK and Santo Domingo and Santiago, Dominican Republic; and San Juan, Puerto Rico.

Delta also will begin new nonstop service between New York-LaGuardia and Nassau, Bahamas.

In June, Delta will start new routes and frequencies to seven U.S. cities from New York-JFK, including Austin, Texas; Jacksonville, Fla.; Kansas City, Mo.; New Orleans; Milwaukee; San Francisco; and Los Angeles.

Delta is the third busiest carrier serving Albany International Airport.