The number of passengers using Luton airport in March rose by 18.6% to 840,820 over the same month last year.
This represented the 12th consecutive month of growth in passengers using the airport.
The airport is responding to the rising demand with a £100 million redevelopment aimed at increasing annual capacity from 12 million to 18 million passengers a year by 2026.
Chief executive, Nick Barton, said: “Growth is being driven by the airport’s great range of destinations, as well as our excellent transport links and easy access from London and the surrounding regions.
“Our £100 million redevelopment will allow us to improve the airport’s facilities and add new capacity to ensure we can continue to meet this growing demand.”
The planned investment includes a redesign of the terminal and upgrades to transport links, including better road access to the M1, new car parking, a revamped bus and coach interchange and improved rail links.