Wizz Air saw monthly carryings top the 2 million mark in August.
The central and eastern European budget airline saw passenger numbers rise by 16.6% to 2.3 million last month over August 2015.
This came as capacity rose by 17% to 2.5 million seats. The rolling 12 month total of passengers was up by almost 20% to 21.5 million.
The monthly increase followed the introduction of a new website on all distribution platforms and the opening of a seventh base in Romania at Sibiu.
A total of 18 new routes were added during the month.