Firehouse Subs celebrates Labor Day with a FREE Medium Sub! All you have to do is purchase an additional large or medium sub, chips, and a drink. Just present this coupon to your cashier and get the deal. Firehouse Subs are great anytime, but especially on holidays. Here’s your chance to treat a friend for free or just grab an extra sub for yourself. Mark your calendars ’cause this promotion is only available on Labor Day.
Offer valid on Monday, September 4, 2017 at participating locations. Not valid in conjunction with any other coupon or special promotional offer. Most Firehouse Subs restaurants will be open holiday hours on Labor Day (Monday, September 4.)