Qatar Airways is discounting flights from Manchester airport by 10% to mark 15 years flying to Doha from the north-west hub.
The service started in April 2003 with four flights a week operated by an Airbus A330.
The number of weekly flights has tripled since with twice daily flights introduced in June 2011, rising to 16 flights a week in May 2016.
The schedule is now operated by a 254-seat Boeing 787 Dreamliner in a two-class configuration.
The most popular destinations from Manchester via Doha over the past 15 years include Bangkok, Phuket, Perth and Bali.
The 15th anniversary fare discount from Manchester runs until May 18.
UK and Ireland interim country manager Kieran Farragher said: “Qatar Airways has proudly been serving the people of Manchester for 15 years and it has long proved to be one of Qatar Airways’ most successful routes to date.”
Airport aviation director Julian Carr added: “It’s fantastic to be able to celebrate the 15th anniversary of Qatar Airways operating from Manchester airport.
“The leading airline offers our passengers a fantastic service and the chance to connect to flights around the globe through its hub in Doha. We look forward to celebrating many more milestones with Qatar Airways in the years to come.”