Spirit's new $16 offer ends on Wednesday, March 5. Destinations include Cancun, St. Thomas, Ft. Lauderdale, and New York.
Cathay Pacific's sale features departures from New York, Los Angeles, and San Francisco. Travel is valid through mid-May.
United's new deal features Europe, Mexico, and Asia. Book tickets by Monday, March 17.
United's sale includes Chicago, Las Vegas, Kahului, and Vancouver. Book tickets by March 17.
