Tikal is located about an hour and a half away from Flores and can be easily reached with a shuttle bus, tickets can be bought from any of the agencies or hotels and are around 60 quetzales for a return ticket.
The only thing to check is that you have a late return as there are 2 companies that run services and one has returns at lunchtime whereas the other allows you to come back at 5pm.
We took the 5am shuttle and arrived at 6.30am at the entrance to Tikal. There are several places to eat around the entrance but they are obviously more costly than outside the park. As you will need at least 8 hours to see the site it is wise to bring lunch. Drinks can be bought at several points within the park and are not too expensive.
View of the West Plaza:
In terms of size, Tikal is the most impressive we have seen. Still set amongst the jungle you really have no idea of the sheer size of the place until you have spent the day walking it. As every group of structures is hidden from the next until you reach the end of the path it is hard to imagine what is around the next corner.
We had the added luck of being there during the low season which meant we saw very few people and were able to climb the temples without having to compete with tours.
View from the North Acropolis:
Most of the site is accessible either directly or via wooden ladders attached to the sides of buildings, allowing tourists to experience the temples even when the steps have long since deteriorated.
View of the Gran Plaza:
The most impressive temples for us were the Jaguar temple and temple 4 due to their views, with temple 4 offering a panoramic view of the whole site.
View of Tikal:
As well as the ruins of Tikal the park itself is host to numerous jungle animals from wild turkeys to screeching monkeys jumping from branch to branch above your head.
A pizote (like a brown raccoon):