"It's just that time. We are still best of friends and always will be but this is the end," thesun.co.uk quoted Merrygold as saying.
The band does not wish to overdo their presence in the music world.
"It's an emotional time. There's no getting away from that. We have been through so much together. But we have to be mature and look at this decision as a celebration of what we managed to achieve. We never wanted to overstay our welcome," Humes said.
The band will end the journey in December with a farewell tour and an album.
"We never wanted to be that band where people said, Oh, bloody hell. It's JLS again. We wanted to finish on a high. We're finishing with an arena tour, our third arena tour, and that is a massive achievement," he added.