What time is Up at The O2 open? Toni 26 October 2022 13:26 Updated Follow Times vary. Click here for details. Related articles How long does the climb last? I’ve got a fear of heights. Can I still climb? Do I need to book in advance? Can I get a refund if I’m scared or worried I’ll not complete it? How high is Up at The O2? Comments 0 comments Article is closed for comments.