From buskers on the bodhran to musicians firing up their fiddles, the atmosphere and the celebration of music and culture has been joyful.
Lots of people have been making the most of the open sessions, with chances to showcase their hidden talents, or learn new skills.
Visitors to the festival have been immersed in live music sessions, interactive workshops, dance classes and pop-up pubs for the past seven days.
The final day of the Fleadh will also be packed with performances at Belfast City Hall.
These include artists such as Áirdan, Seoid, Celtic Roots and many more.
The closing ceremony will begin at 18:00 BST, kicking off with a performance from singer-songwriter and harpist Niamh Noade, and it will close at midnight with a performance from the winners of the Senior Céilí Band Competition.
More information can be found here., external
Aside from the performances at City Hall there will be a range of activities across the city centre.
The Seamus Heaney centre at Queen’s University Belfast is hosting an exhibition, called Something to Say that looks at the personal and professional friendship between Seamus Heaney and David Hammond.
You can visit an Irish language craft and culture market at Conway Mill and there will be plenty of sessions, external going on with workshops and arts activities available.