Subway sandwich coupons, allow you to get items like a free 1.25 ounce bag of flat earth baked veggie crisps, when you purchase a Subway sandwich. The coupons expire, but new offers will be up and running to take it's place. If you see an offer you like, it is imperative to get the coupon as soon as possible on the Internet. Some offers are only valid at particular branches and others can be used anywhere, so check the fine print on the coupon. To be safe, it is best to confirm that your nearest Subway location has this offer, if you want to use it. Subway coupons are also available for sale. For example, by paying $9, you would get nine coupons. These coupons provide special offers. If you buy one Sub with a drink, then you get one free. However, you need to verify whether the offer is available in your area...