Ending today, Frontier Airlines via DealBase offers Frontier Airlines 1-Way Flights to Mexico and Latin America, with prices starting from $78.79. (On the DealBase landing page, click on "Frontier Airlines" in the top line to see this sale.) This price is valid for flights departing on March 12 from Chicago, IL (ORD), with arrival in Cancun, Mexico (CUN). That's the best price we could find for select routes today by at least $5. Book this travel deal today for travel through June 5.