It appears from the following link that you have to book in advance as visitors are restricted. http://www.visitmalta.com/hal-saflieni-hypogeum-map

Within the above link is the following where you can book your tickets http://www.heritagemalta.org/hmshop/hmshop.html

Thanks for posting those links Glynis - have bought the tickets for our Sept trip. Looking at the website, it seems that tickets sell out at least a month in advance. We've booked for the 21st of Sept which is a public holiday so I'm glad we've got in early.

Excellent Corinne glad to be of help

yes thanks Glynis.

I go in June so perhaps with it heading into High Season will need to book Late March.

I have just booked our 2 tickets for the 24th September, almost left it too late as there are not many spaces left