Spirit's new $18 fares are valid for booking through Saturday, January 3. Flights to Jamaica, Cancun, and Orlando are included.
United is kicking off the new year with sale fares starting at $55 one-way, or $110 round-trip. Destinations include San Francisco, Dublin, Sydney, and Hong Kong.
Continental's New Years sale features New York, Los Angeles, Houston, and Chicago. American is offering similar (or better) prices.
American New Year's sale includes flights to New York City, Las Vegas, Chicago, and New Orleans.
To ring in the New Year, the airline is offering discounts to many cities including Chicago, Las Vegas, and San Diego.
