How far out can you reserve tickets for Sainte Chapelle. Trying to get for end of September but official site does not allow. Can not locate how far I. Advance they release. Sent email but have not received reply.
I don’t know if this is would work for you, but there are frequently concerts at Sainte Chapelle. I’ve now visited it several times and got to sit and take it all in for a nice amount of time while also listening to beautiful music and not fighting the crowds. Bonus points if you can find a sunset one when the light hits the windows just so. Generally those concert tickets are available months in advance. Just do a quick search of ‘concerts at Sainte Chapelle’ to see if any are happening while you are there.
We booked our 8/28 tickets on June 14 and as of my checking the website now August has beaucoup open dates. I do see September is not showing at all. I suggest checking periodically- perhaps starting the 15th of this month.