Central and eastern European low-cost carrier Wizz Air saw August passenger carryings rise by 19%.
Numbers were up to almost two million in the month against August 2014.
The load factor increased by one percentage point to 93.2%.
The August numbers gave the airline a rolling annual total of almost 18 million passengers, a 20% rise year-on-year.
The carrier said it enhanced its operations infrastructure with a new purpose-built aircraft maintenance hangar in Budapest.
The 2,000 square metre building is designed to accommodate larger Airbus A321 aircraft due to enter the fleet from November.
Nice and Baden-Baden in Germany are being added to the airline’s network.
Seven new routes from Bulgaria, Slovakia, and Hungary are also being introduced in the second half of the financial year.
A sixth new aircraft will be added to Wizz Air’s base in Sofia and a tenth in Budapest from March 2016.