Besides providing a sense of comfort, fast food meals aren't too heavy on the wallet, making them extremely attractive to students and as a source of late-night food. Pretty much all fast food is cheap, but you’ll have to head to the Midwest to find the cheapest of the cheap.

There are many fast-food restaurants that serve all different kinds of food, making the award of “cheapest combo” a bit hard to pin down. However, for a typical order of burger, fries, and soda, Tulsa, Oklahoma, has the lowest rate.

The burger combination costs an average of $6.55 across Tulsa, much less than cities like Atlanta ($9.36 per combo) or New York ($9.52 for a burger alone). Therefore, it might be worthwhile to head to Oklahoma for a low-costing bite.