More than 100,000 Ryanair passengers had their flights cancelled last month as the carrier suffered from pilot strikes and air traffic control staff shortages.
The airline today reported a 5% lift in year-on-year passenger carryings to 13.3 million for August despite the peak period disruption.
This led to 550 flights being cancelled compared to just 27 in the same month last year.
The load factor remained at the same 97% level over August 2017.
Germany arm Lauda carried 500,000 passengers in August.
Ryanair chief marketing officer Kenny Jacobs said: “Ryanair’s August traffic, which includes Lauda traffic for the first time, grew by 9% to 13.8 million customers, while our load factor was unchanged at 97%, on the back of even lower fares.
“Regrettably, over 100,000 Ryanair customers had their flights cancelled in August because of repeated ATC staff shortages in the UK, Germany and France, and one day of unnecessary pilot strikes.
“Ryanair, together with other European airlines, calls for urgent action by the EU Commission and Governments to correct these ATC staff shortages which are disrupting the travel plans of millions of Europe’s consumers this summer.”
Meanwhile, Hungarian low-cost carrier Wizz Air saw a 20.4% rise in the number of passengers flown in August to almost 3.5 million with a load factor up marginally to 95.6%.