More than 45 million passengers across the UK suffered flight disruptions in 2023.
Air passenger rights organisation AirHelp says most faced delays of under three hours, so were not eligible for financial compensation.
Still, over 3.7 million people had longer delays and were entitled to compensation from their airline.
A further 3.8 million people had their flights cancelled altogether.
Last year, London Gatwick had the highest disruption rate of 42%, affecting over 8.2 million passengers.
Next was London Southend Airport with 39% of passengers disrupted in 2023.
The most punctual airport in 2023 was Durham Tees Valley Airport with 19% of flights disrupted.
Analysing disruptions per flight route from UK airports, AirHelp found the London Gatwick to Jeddah, Saudi Arabia route the most disrupted.
Over 91% of flights were disrupted last year, affecting 20,000 fliers.
London Heathrow flights to Portland and Bermuda were also heavily affected by delays or cancellations.
Tomasz Pawliszyn, CEO of AirHelp said: “Last year was unprecedented; strikes across Europe, extreme weather conditions and air traffic control outages were just some of the challenges.”
“As air travel is returning to pre-pandemic levels. At AirHelp, we are committed to helping passengers receive the best customer experience.”
