Spring: It's that magical time of year when the cost of travel to key destinations stays affordable, while warmer, temperate weather breezes in. There may not be a better time to visit certain places, whether you're eyeing excursions to vibrant European cities, charming U.S. towns, or sun-soaked islands. Ready to give winter an icy kiss goodbye? Ring in the warm weather with a budget-friendly shoulder-season trip to one of the following five destinations.