McDonald's US: Free Medium Fries with $1+ Purchase Once a Week

McDonald’s is currently offering a free medium Fries deal in the United States when an eligible customer makes a purchase of at least $1 in the McDonald’s app. The official deal page says the offer can be used once per week through October 4, 2026 at participating McDonald’s restaurants. Customers must opt in to MyMcDonald’s Rewards, and the $1 minimum excludes tax. McDelivery orders are excluded, so this should be treated as an app deal for eligible participating locations rather than a universal delivery promotion. No coupon code is published; the offer is accessed in the app. Restaurant participation and app eligibility still matter at redemption. DealVorio verified the active offer directly from McDonald’s US on August 27, 2026.