AirHelp, a German claims management company that specializes in airline disruption claims, first published its ranking of the world's major airports in 2015 and continues to publish updated rankings annually.
Airports are scored on a 10-point scale based on three criteria. On-time performance measures how punctual flight departures and arrivals are and accounts for 60% of an airport's overall score.
Service quality contributes another 20% of the score. It is evaluated by the quality of customer service, how fast security wait times are, and how clean an airport is. Food and shops constitute the final 20% of the score; data is collected from passengers who rate food and shopping options on a scale of one to five.
AirHelp explained in its methodology brief that it excludes airports it is "unable to get data for," and that the ranking only includes the world's "best known and most used airports."
At the top of the list: Qatar's Hamad International Airport, which beat out 131 other airports for the top spot. It garnered an overall score of 8.39 out of a possible ten.
But while Qatar's airport shone brightly, several European airports landed at the bottom of the list. According to AirHelp's rankings, eight of the world's 10 lowest-ranked airports are located in Europe. The bottom ten also includes one Middle Eastern airport and one North American airport.
Take a look at the 10 airports that were ranked the worst in the world by AirHelp. Entrants are arranged in descending order according to their final scores.