We have a hunch prices will continue to drop.

Cabo San Lucas
Credit: Getty Images

At the end of November, flights to Mexico dropped to $188 round-trip. And that price just got cheaper.

According to Thrifty Traveler, travelers can find $178 round-trip tickets to Cancún right now, with affordable fares also available to San Jose del Cabo and Puerto Vallarta.

Generally speaking, the tickets are available for trips between January and May — and can be found from a number of major U.S. cities. (There are $197 round-trip flights from Los Angeles to San Jose del Cabo, for example, as well as $214 tickets to Puerto Vallarta from San Francisco; and those $178 seats from Houston and Fort Lauderdale to Cancún.)

Travelers should note that some of these deals can be found on JetBlue, which is currently giving away three All You Can Jet passes to travelers who book flights directly on their website.

Simply book a winter getaway to Cancún, and keep your fingers crossed that this affordable vacation leads to an entire year of free flights.

While these fares will likely sell out fast, travelers can look forward to increasingly cheap trips to Mexico. In August, Southwest Airlines announced a number of new routes to these popular Mexican vacation spots, which will launch in March. The airline is also increasing seasonal service to and from Cancún.

Recent studies — yes, actual scientific studies — have proven that Southwest’s presence (known as the Southwest Effect) can force competitors to lower fares by as much as 15 percent.