Offers and Promotions Burger King Singapore E-Coupons: Whopper Set $6.90, Breakfast Croissan'wich Pair $6.50, Valid Until 3 Jan 2027 Burger King's Q4 2026 e-coupon booklet has deals up to 60% off, including a Whopper with fries for $6.90 and a breakfast Croissan'wich pair for $6.50. Coupon codes are keyed in at the kiosk. Nov 13, 2026