The start of the summer travel peak in July saw Ryanair achieve record number of passengers.
The figures mean that Ryanair became the first airline in the world to carry more than 11 million international passengers in one month, according to chief marketing officer Kenny Jacobs.
Passenger numbers were up by 12% to 11.3 million due to cheaper fares.
The load factor at Europe’s largest budget airline went up by one percentage point to 96% over the same month last year.
Jacobs said: “These record passenger figures were delivered at lower fares, and thanks to the continuing success of our ‘Always Getting Better’ programme which continues to win new customers and new markets, despite yet more French air traffic control strikes and continuing post-Brexit market uncertainty.
“Our customers, and in particular families, are flying in even greater numbers this summer, thanks to Ryanair’s lower fares that are already down 10% versus last year.”