Where is The O2 box office? The O2 06 March 2015 14:22 Updated Follow The box office is just to the left of The O2’s main entrance. Just follow the covered walkway. Related articles Accepted forms of ID Access Information How do I know what sort of seats I’ll get? Can I come and purchase tickets from The O2 box office? Ariana Grande Comments 0 comments Article is closed for comments.