EasyJet faced an increased number of flight cancellations in July.
The budget airline was forced to cancel 350 flights in the month against 318 in July last year, the majority of which were due to fires at Rome Fiumicino airport.
The extent of last month’s disruption came as the carrier reported a 6.7% year-on-year rise in passenger carryings to more than 7.5 million with an improved load factor of 95.8%.
This gave a rolling annual total of 72.3 million passengers, against 67.7 million a year earlier.
The figures compare with rival Ryanair’s July total of 11.3 million carryings and 2.2 million passengers flown by Wizz Air.
Norwegian saw passenger numbers rise by 9% to more than 2.9 million passengers last month over July 2015 with the load factor up by 08 percentage points to 94.6%.
But less than 65% of flight departed on time as the carrier was “considerably affected” by delays in European air traffic in general.
Chief executive officer Bjørn Kjos said: “We are very pleased that so many passengers chose to fly with Norwegian in July.
“Today’s traffic figures show a solid load factor across all markets and prove that more and more people realise that it is possible to fly comfortably at a low fare.”