Southwest Airlines via DealBase offers select Southwest Airlines 1-Way Fares to Mexico and South America from Houston, TX, with prices starting at $86.30. (On the DealBase landing page, click on "Southwest Airlines" in the top line to see this sale.) That's the lowest rate we could find for select flights by $37. This price is valid on flights departing from Houston, TX, (HOU) with arrival in Mexico City, Mexico, (MEX) on January 10, 2017. This sale includes flights to Montego Bay, Jamaica, (MBJ); Liberia, Costa Rica, (LIR); and Puerto Vallarta, Mexico, (PVR). Book this travel deal by October 20 for travel from January 10, 2017 through March 2, 2017.
All prices, dates, and booking details were valid at the time of publication.