A record of more than 500,000 passengers used Bristol airport last month.
The figures represented an increase of 7.1% on April 2014.
The performance ensured a 13th consecutive month of growth at the southwest airport.
BMI Regional saw traffic grow following the launch of new services to Paris and Düsseldorf. Brussels Airlines, easyJet, Ryanair and Thomas Cook Airlines also recorded strong growth from Bristol.
Further growth is forecast this month with charter airlines commencing their summer programmes.
New destinations include Bilbao, lsle of Man, Porto, Gibraltar and Catania in Sicily by easyJet and Cape Verde, Paphos and Hurghada with Thomson Airways.
Wizz Air makes its Bristol debut in June with twice weekly flights to Katowice in Poland.
An eastern terminal extension is due to open in July to help cater for the increased services.
Airport chief executive, Robert Sinclair, said: “Growth in passenger numbers supports investment in facilities such as the eastern terminal extension which will create additional space and seating, as well as a wider choice of shops and restaurants.
“It also demonstrates to airlines the strength of the market for air travel in the south-west as we work to attract exciting new routes to add to the 100-plus already on offer from Bristol.”