If you missed out on Frontier's Buck Fare sale yesterday, don't despair: the budget airline's back at it again today, this time offering flights to Cancun in September for the bargain-basement price of $90, round trip.
Eligible departure cities for Cancun include Denver, Philly, and Cleveland, although there are other tropical destinations on offer like Los Cabos, Puerto Vallarta, and Montego Bay. Hell, you can even fly from Chicago to Punta Cana (in the DR) for $61, one-way. It's not just international deals, either: you can score a coast-to-coast flight (like, say, Atlanta to LA) for around $100, round trip.
Yes, you'll still have to shell out another $100 or so to pay for for a carry-on, checked bag, and your seat (yes, your seat) -- this is Frontier after all. Still, $190 is a helluva lot less than you'd normally be paying to fly to Mexico by our calculations.
Available flight dates vary by city of departure/arrival, and can range from mid-September to mid-November. Whichever city you're looking at, though, you'll have to book by midnight tonight (9/10) to take advantage of the low rates. That is, if they don't sell out before then.