The amount of money saved with Swanson coupon codes depends on the individual coupons. Sites like RetailMeNot.com and Coupons.com have a variety of coupon codes offering savings between $5 and $17 on average, as of 2015.
RetailMeNot.com coupon codes vary and change frequently, but codes may include saving a percentage off a purchase, saving a certain dollar amount after spending a specific amount and getting free shipping. The site sometimes lists buy-one-get-one-free coupons for Swanson.
Coupons.com offers coupon codes and promotions, such as a percentage off the entire purchase during clearance events. Since it is a percentage, the amount saved depends on the amount of the purchase.