This deal has expired, but be sure to check out our Top 25 deals of the week for savings on trips to destinations around the globe.

Aeromexico is taking a lesson from cell-phone companies by introducing its own version of a "Family Plan." Buy three or four tickets on select routes between the U.S. and Mexico and receive one ticket – for an adult or a child – for free. Some destinations included in this offer are Los Cabos, Guadalajara, Cancun, Leon, Monterrey, and Mexico City. Fly from major U.S. cities like Las Vegas, Houston, New York, Miami, Seattle, and many more.

Though you may travel whenever you wish, some blackout dates do apply and tickets must be purchased no later than December 15. However, for those planning a Christmas or New Year's getaway, you’re in luck – this offer is surprisingly still valid throughout the holiday season.

For more information, visit www.aeromexico.com.