Passengers using Luton airport rose by more than 13% last month to almost 1.2 million.
The year-on-year increase was a record for the month of February.
Amsterdam, Geneva and Bucharest attracted most travellers from the airport.
Ryanair also announced a new route to Krakow from October.
Last month’s increase follows expansion of the airport terminal with 48 new shops and restaurants.
A second executive lounge to be run by No 1 Lounges opens in April.
Airport CEO Alberto Martin said: “The diversity in destinations that we offer is just one reason why more passengers are choosing to travel from London Luton airport, both for business and leisure.
“Since the opening of our newly upgraded terminal, our passengers have been able to experience a more comfortable journey thanks to the addition of new shops and restaurants, more seats, and new boarding gates.”