The biggest airlines based on number of departures (and not the number of passengers). The number of flights are the daily avarage from one week. Update: October 28, 2023.
There are top 100 in the ranking, but admin only summarized the list for Southeast Asian airlines that include it. Malaysia's Air Asia is the largest and busiest with 441 flights per day, followed by Indonesia's Lion Air in 2nd place and Vietnam Airlines in 3rd place.