A record 625,000 passengers used Bristol airport last month, up 3.4% on June 2012.
The rise came despite the figure for last June being boosted by a late Whitsun Bank Holiday and the Queen’s Jubilee.
This June’s figures surpass the previous record, set in 2008, by 15,000.
Growth was recorded across all airline sectors, with new BMI Regional services to Frankfurt, Munich and Hamburg performing particularly well.
KLM’s four-times daily service to Amsterdam carried 12% more passengers than in the same month last year thanks to the introduction of a larger Embraer 190 aircraft on the route.
Forecasts for the peak summer holiday season are positive, with new or additional services to Corsica, Chania, Zurich and Dalaman expected to prove popular, according to the airport.
Aviation director Shaun Browne, Aviation said: “We are delighted with June’s results, which demonstrate returning confidence in both the business and leisure travel markets.
“We will look to build on this successful first half of the year, and are already working hard on new initiatives for 2014, with new or additional services likely to be announced in the coming months.”
Bristol airport’s passenger numbers rose for the third successive year in 2012, up 2.8% to 5.9 million, making it the only airport in the UK’s top ten to see growth each year since the end of 2009.