Moms eat free deal Mother’s Day at Tijuana Flats May 092013 If you're new here, you may want to subscribe to our daily email updates. That way, you won't miss a deal. Thanks for visiting! Participating Tijuana Flats restaurants are offering an opportunity to treat the queen of the family to a free entrée. The free meal for moms on May 12 requires purchase of another entrée of equal or more value. The Mother’s Day deal is featured on the Tijuana Flats Facebook site. Sorry, the comment form is closed at this time.