The Coral kicked the night off with their engaging mix of rock, folk fusion.
Before Courteeners took to the stage as the 100th headliners at the Yorkshire coast venue since it re-opened to the public in 2010.
The group delighted fans with a set which included How Good It Was, Smiths Disco, Hanging Off Your Cloud, Modern Love, Not Nineteen Forever and opener Are You In Love With A Notion?
Live music continues at Scarborough OAT today (Thursday September 9) with fellow Mancunian greats James headlining before chart-toppers Snow Patrol on Friday September 10.
The summer 2021 season at the Open Air Theatre draws to a close on Friday September 17 with British music icons Duran Duran promising to set the venue alight.
9. Courteeners at Scarborough Open Air Theatre
The encore started with "The rest of the world have gone home" Photo: Cuffe and Taylor
10. Courteeners at Scarborough Open Air Theatre
"Please don't" and "Smiths disco" came next Photo: Cuffe and Taylor
11. Courteeners at Scarborough Open Air Theatre
Before normal service returned with energetic performances of "Hanging off your cloud" Photo: Lamorna Roberts
12. Courteeners at Scarborough Open Air Theatre
"Heavy jacket" and "Modern love" Photo: Ben Milner