Spirit's latest act-fast offer includes fares from $16 round-trip for $9 Fare Club members. Non-members can also save, with rates starting at $34 round-trip. Book by January 1.
Southwest is offering 50 percent off its Las Vegas routes, with round-trip fares starting at $70. You must book quickly, however—this sale is only available through December 31.
Flights to Aruba, Cancun, Jamaica, and the Dominican Republic are included in this new offer from American. Depart from Miami and book tickets by January 12.
American's new sale to Mexico includes popular beach destinations such as Cancun, Los Cabos, Cozumel, and Monterrey. Rates start at $154 for travel through early March.
Who wouldn't jump at the thought of a free ticket? But act fast, because Spirit's offer is only valid for booking through 11:59 p.m. ET on December 24.