Subway's current promotion is perfect for any fans hungry for affordability. Now through the end of October 11th Sub Club members can order any Footlong Sub on Subway's menu for $6.99. we tried the code on a Philly Steak Footlong Roast Beef Sub and saved $3.70. That is almost almost 40% in savings. Must order on the App or use Subway.com and enter code FL699.