Heading to the movies this weekend? Theater popcorn can put a serious dent in the budget. Save with a new Regal Cinemas mobile coupon! Get $3.00 off the price of popcorn through 10/6. Since this is a mobile coupon, a browser enabled phone is required to receive it. Just enter a cell phone number on the Regal Cinemas Facebook page to have the coupon sent to you. No printed coupons will be accepted.