Many of the worst airlines for cheap flights don't offer many direct flights, resulting in a lack of competition and fewer deals.
At the end of the list of worst airports is one named for a man renowned for flying: John Glenn. The Columbus International Airport, which bears the astronaut's name, only offers flights to 36 destinations, including a paltry two international cities: Toronto and Cancun. Because of this, it only offered 45 deals in the last year.
Example Deal: $349 to Turks and Caicos
Alternative: Cincinnati /Northern Kentucky International (CVG) and Cleveland Hopkins International Airport (CLE), both a couple hours away from Columbus, get twice as many deals. Hop in the car and head to those airports instead.