underground colosseum/roma pass

We are traveling to Italy in late June and have already booked the underground Colosseum tour. We bought them with the intention of buying the Roma pass and did not buy the Colosseum tickets at that time. The price on the Roma pass has gone up and it no longer seems like a good value for our family. Can we buy regular Colosseum tickets online before we go to Italy and use it with the underground Colosseum tickets? I can not get a clear answer from the booking people who we have contacted via e-mail and phone.
Thanks!

Posted by donna
cranberry twp, PA, United States
2406 posts

Yes, just go to the official site and use the "print at home" option to buy and print entry tickets. This will give you the option to visit the forum and palatine hill before your tour if you wish to. The ticket is good for all three sites and is valid for two days. You only get to enter each site one time. http://www.coopculture.it/en/ticket.cfm?office=Colosseo&id=2 Donna