Cancun is a short flight from a huge part of the US population, and airlines fly to it with many daily nonstops from Miami, Atlanta, Dallas, Houston, Chicago, New York and dozens of other cities. That much capacity keeps fares sharp, particularly outside the winter peak.
It also means the cheapest week for your trip can be very different from the most expensive, sometimes by hundreds of dollars. If you have any flexibility, the calendar view on a search engine is your best friend. Our wider guide to cheap flights to Mexico covers the other main destinations.
