Atlanta International airport in Georgia has the second-cheapest flights. Flickr/Jon Skilling Cheapflights.com just released its 6th annual US Airport Affordability Index, which ranks 101 popular US airports by average airfare.

Cincinnati/Northern Kentucky International airport in Ohio has the cheapest flights, with an average airfare of just $199. It jumped to first place from 77th last year.

Atlanta International, in Georgia, is the second-cheapest airport to fly from, with an average airfare of $231, and Dallas, Texas, hopped up one spot to 3rd, with an average airfare of $251 — tied with LaGuardia, New York.

In contrast, you might want to avoid flying into McGhee Tyson, Tennessee, which is at the bottom of the list with an average ticket costing $552. Pensacola Regional in Florida and Portland International Jetport in Maine are hot on its heels, with average airfares of $540 and $537 respectively.

This shows us that location doesn't necessarily matter, as popular airports like LaGuardia beat less frequented ones like McGhee Tyson.

Here are the top 10 cheapest airports in the country:

Rank Airport Average Airfare Ranking Last Year 1 Cincinnati/Northern Kentucky International, OH (CVG) $199 77 2 Atlanta International, GA (ATL) $231 73 3 Dallas Love Field, TX (DAL) $251 4 4 La Guardia, NY (LGA) $251 31 5 Chicago-O'Hare International, IL (ORD) $265 65 6 Philadelphia International, PA (PHL) $267 48 7 Long Beach (Daugherty Field), CA (LGB) $267 2 8 Cleveland-Hopkins International, OH (CLE) $278 66 9 Orlando International, FL (MCO) $281 29 10 Metropolitan Oakland International, CA (OAK) $282 12

And here the 10 most expensive ones: