Can you take the Harry Potter train into universal studios during Halloween horror nights if you have a ticket?

No because it's closed after 5pm for both sides

Yup, all correct lol! 💪🌏

You have to buy tickets for both parks also.

Yes , you can but before 5 pm and then you can stay at univesal for the horror nights because you have the ticket

So universal studios actually closes earlier than islands of adventure during horror nights, so unfortunately it's a separate ticket for horror nights. And the train stops running when they close at 5pm. So you'll have to walk over to universal to get there.