Fly to Costa Rica, Nicaragua, Chile, and Peru with American's latest deal. Travel is valid through the end of January.
American's Hawaii deal includes Kauai, Maui, Oahu, and the Big Island. Travel is valid through mid-December.
Alaska's winter deal features Las Vegas, Seattle, and San Francisco. Travel is available in December and early January.
Delta's Spain sale features flights to Madrid. Travel is valid from January through mid-March.
