Buy 3 Airline Tickets, Get 1 FREE

If you have plans to travel from the US to Mexico or Central America, you could buy 3 tickets and get 1 FREE.
Here's the step by step how to do it:

1. You will need to open an AeroMexico credit card
2. Upon approval, they will send you a complimentary companion voucher for flights from the US to Mexico. That's a bonus.
2. Make one purchase and you will earn 10,000 miles, another bonus. Aeromexico is part of the Sky Team so you can book using Chase Ultimate Rewards and Starwood Points.
3. But here's the perk we are after, use your new card to buy 3 airline tickets and get the 4th free. You must call Aeromexico at 1 800 237 6639 to make the reservation and then go to the Aeromexico counter at the airport to actually buy your tickets. The service agent told me they need to verify the card. All 4 tickets must be for the same itinerary, but do not have to be limited to the US and Mexico.
4. You will earn double miles on the tickets you buy.
5. If you choose to keep this card, you will earn a $99 companion certificate every year on your anniversary.

The card does not appear to have an annual fee.

It's a nice perk and could save you up to $1,000. That's how we do almost FREE family travel.