Aer Lingus Regional has said that July was its best month since it started operations just over four years ago.
The airline - which is operated by Stobart Air, formally Aer Arann - carried a total of 141,737 passengers in July, a 22% increase on the same month last year.
The increase marked the 13th month of growth in a row for the airline.
The airline recently announced a new route from Cork to Newcastle and has introduced a number of new aircraft on its services.
Since the start of the year, Aer Lingus Regional has flown a total of 762,000 passengers - an increase of 25% on the same time last year.
It said that its passenger traffic at Dublin Airport jumped by 25%, while its Shannon Airport figures soared 50% and passenger numbers at Cork rose by 14%. Passenger numbers also rose 3% on its Dublin-Kerry route.
The airline also noted an 35% increase in connecting traffic from the UK to the US and Canada, with the Edinburgh, Glasgow, Bristol and Birmingham routes all reporting strong annual increases.
The airline's chief commercial officer Simon Fagan said that sporting events played a part in boosting its passenger numbers in July.
"We saw a 21% growth in passenger numbers to Manchester due to the Open Championship while there was a 34% increase on Glasgow Airport traffic due to the Commonwealth Games and introduction of brand new larger aircraft on that service", Mr Fagan said.