Heads up, sun-seekers! The Flight Deal has spotted some sweet nonstop flights to Cancun for under $400. We're talking roundtrip, and it's not some bare-bones fare either. This deal includes a regular economy ticket, meaning you can actually pick your seat in advance without shelling out extra dough! Why should you care? Well, Cancun is a classic vacation spot for a reason: beautiful beaches, delicious food, and plenty of fun activities. Snagging a nonstop flight at this price frees up more of your budget for those tasty margaritas and that oceanfront massage you deserve. Plus, who wants to waste precious vacation time on layovers? Do your research and see if it works for you. Happy travels!