Five Guys Coupon: Buy Any Burger, Get One Free B1G1 Free (Order Online or via Mobile App, Valid thru 3/12/26)

Five Guys restaurants offer the following promotion: Buy Any Burger, Get One Free of equal or lesser value. Promo Code: FGAFTERPARTY. Mon. - Thurs., March 9 - 12, 2026. When you order via online or mobile app only. One redemption per account. Must be logged into your Five Guys account. Enter the code in your bag before checking out to unlock offer.