Customers flying with the airline from the airport – the carrier’s first-ever base – received a VIP customer experience at check-in, which included a red-carpet welcome, balloon arch, birthday cake and goodie bags.
Three passengers who were also celebrating their birthday on the same day received a pair of free return flights.
The celebration marked 20 years since the first ever Jet2.com flight took off from Leeds Bradford to Amsterdam in 2003.
With two aircraft serving eight destinations that first summer, the company now flies to 68 sun, city and ski destinations across the Mediterranean, Canary Islands and Europe from ten UK bases.