Almost 790,000 people used Glasgow airport in July, a figure broadly in line with the same month last year.
Demand for long haul and EU scheduled travel continued to rise, with the number of passengers using these services up nearly 20%.
Emirates, Jet2.com and easyJet all reported year-on-year growth for the month.
Overall passenger traffic was down 0.5% against July 2011 as a result of the school holidays starting in late June this year instead of early July. This shortfall equates to 3,700 passengers.
Glasgow airport handled more than 1.5 million passengers in June and July, an increase of nearly 30,000 on the same two months in 2011.
Airport managing director Amanda McMillan said: “We have had a great summer so far and it’s very pleasing to have handled nearly 30,000 more passengers than last year.
“July’s year-on-year shortfall is only part of the story and directly attributable to the fact that the first weekend of the school holidays fell in June this year.
“The recent introduction of a number of new routes, including Emirates’ second daily service to Dubai and Sunwing Airline’s twice weekly service to Toronto, ensured demand for long-haul travel from Glasgow Airport remained strong during July, which was very encouraging.
“Expanding our route network will always be a priority but the continued economic uncertainty means it is extremely challenging to do so, especially as we enter the traditionally tougher winter months.”