That’s something that we learnt to late…unfortunately! The queues to reach the top of the island are very long so if you want to see Mount Teide and have a look at the whole island from a 3.718 meters height, you should book your tickets with months of advance.
The base of the volcano can be reached by car and then there’s a cable car (teleférico) that brings you to 3.555 m. You can get online tickets to skip hours and hours of queue with no risk of loosing your seat. Mount Teide is also a perfect observatory point. That’s why you’re offered the option to book the “cable car at sunset ticket”. We could not enjoy this experience since there were no seats left so, again, start buying your tickets NOW 🙂
For all hiking lovers there are also several paths to reach the pick by foot with a private guide. Remember that to reach the very top of the volcano (3.718 m.) you’ll need a special free permit released by the Natural Park with months of advance. Also this permit can be easily get online.