Luton based easyJet became the latest airline to lay bare the impact of air traffic control strike action as it revealed that nearly 1,000 flights were cancelled last month.
The airline said it cancelled 974 flights in May, with around 600 due to industrial action in France and Italy and 300 as a result of bad weather disruption and air traffic control restrictions.
The cancellations compared with just 117 a year earlier.
Rival Ryanair made a plea on Tuesday for the EU to take "immediate" action to end the ATC strikes and prevent a summer of travel chaos after more than 200,000 of its customers were hit by flight cancellations in May.
The Dublin-based airline was forced to cancel more than 1,100 flights, with the bulk due to the industrial action in France and ATC staff short shortages.