RANKED: The 13 best airlines in the world in 2018

The best and worst airlines in the world have been revealed by flight compensation company AirHelp — and some of them are surprising.

The company's sixth annual AirHelp Score rates airlines based on quality of service, on-time performance, and claim processing in order to produce an overall score.

The highest ranking airlines prove that customer service is key — and you don't need to provide a luxury service to get it right.

Scroll down to see the 13 best airlines in the world, ranked in ascending order by their overall AirHelp score.

SEE ALSO: What it's like to fly Norwegian Air, the airline with the world's longest low-cost route from London to Singapore

SEE ALSO: Singapore Airlines is set to launch a 19-hour flight from Singapore to New York — beating the record for longest in the world

13. Wizz Air — 7.95. The budget Hungarian airline is reliable for being on time with an 88% on-time performance score, although a 6 on quality of service brought it down in the ranking.

12. Norwegian — 8. With a solid 8 for service and 8.61 for claim processing, the airline which boasts the world's longest low-cost route from London to Singapore came in at 12 for its well-rounded experience.

See what it's like to fly on Norwegian here.

11. KLM — 8.01. The Netherlands' Royal Dutch Airline has a good on-time performance of 85%, as well as a decent 7.54 for claim processing and 8 for service.