Budget airline Wizz Air announced a 20 per cent rise in passengers for last month, compared to May last year.
Passenger numbers were up to 1.6m, from 1.3m last year. This was in part helped by the introduction of two new A320 aircraft, which have 180 seats each.
The firm also announced that capacity was up to 1.8m seats, an increase of 18 per cent from 1.5m in May 2014.
Revenue passenger kilometres, the distance travelled by paying customers, was also up by 20 per cent to 2.4m.
Load factor, the amount of capacity that an airline actually uses, was up to 89 per cent from 87.5 per cent. The measurement is particularly important for low cost airlines who do not have higher priced, first-class tickets.
Wizz Air has launched a new Plus Fare category, giving some customers a higher end experience, with priority boarding included.
It will also launch a new base in Debrecen, Hungary, its 22nd.
Furthermore, five new routes – 3 in Hungary and two in Lithuania will launch in December and September respectively.