JetBlue has shed many of its business-focused routes from the Northeast and has instead pointed its planes at Florida. That's a tried-and-true move for the airline, which originally launched 25 years ago with what's essentially the same network strategy.

JetBlue (NASDAQ: JBLU) today announced an expansion of its route map with added destinations and more flights that enhance its position in key leisure markets and strengthen its Boston and New York focus cities.