The latest CAA 2025 statistics show that the airport climbed 15 places in the on-time performance chart.
It also holds the title of the most punctual airport in London, with 77.6% of flights departing or arriving within 15 minutes of schedule.
London Southend tripled its annual traffic to 720,000 passengers in 2025.
Jude Winstanley, CEO of London Southend Airport, said: “I am incredibly proud of what our teams have achieved over the past year. We know how important it is for passengers to fly on time, so this matters.”