December 3rd and 4th only, Burger King is celebrating the Whopper sandwich's birthday by offering a Whopper for only 37¢ when you add the offer in your Royal Perks account. If you're not a member yet, click here and join for free. Click on Offers to add the offer to a mobile order or redeem in the restaurant.
Offer valid 12/3 - 12/4 at participating U.S. Burger King restaurants on the BK app and bk.com. Account registration required. Limit one per guest/account. Must add coupon before placing order. Cannot be combined with any other coupon or offer. Tax extra. Not valid in AK and Hi, or on delivery orders. Visit "Offers" tab on the app or bk.com/offers to add coupon.