In making its annual evaluation, AirlineRatings monitored 385 global airlines by considering the airlines’ incident records in recent years, fleet age, results of audits conducted by the governing body of aviation, the International Civil Aviation Organization (ICAO) and other aviation authorities.
Other carriers featured in the ranking are Switzerland's EasyJet, the Philippines's Cebu Pacific, India's Indigo, Ireland's Ryanair, Mexico's Volaris, Canada's Westjet, and Hungary's Wizz Air.
AirlineRatings also rates Vietjet at seven-star level, the highest ranking for aviation safety in the world for many consecutive years since 2018.