More than 500,000 passengers have flown to London and beyond from Leeds Bradford airport in the four years that British Airways has served the route.
Three flights a day to Heathrow started on December 9, 2012, with the US being the top onward destination.
Other favourite destinations for Yorkshire travellers include Hong Kong, Canada, South Africa and the United Arab Emirates.
BA Leeds Bradford airport manager Simon Lea said: “We remain fully committed to Leeds Bradford airport and the fact that we have reached this milestone figure in four years is due to the loyalty of our customers in Yorkshire who are benefitting from a direct air link to the capital, some excellent onward connections and great low fares.
“We work closely with the airport to ensure that we provide the high quality service our customers want and this year particularly we have concentrated on inbound customers and promoting Yorkshire as a destination for visitors from the south of England and even further afield.”
The airport’s aviation development director Tony Hallwood said: “The fact that we have now carried more than 500,000 passengers is a fantastic milestone to celebrate and we look forward to continuing this successful and popular service.”