Start with the type of experience you want and the island where you are staying. Tenerife offers the greatest variety, including Mount Teide, marine excursions and major attractions. Lanzarote is particularly strong for volcanic sightseeing, while Fuerteventura is ideal for beaches and watersports. Gran Canaria offers a balanced mix of mountain excursions, sightseeing and coastal activities.
Also check the duration, departure location, transport arrangements and what is included in the price. Some excursions include hotel pickup, while others require you to reach the meeting point independently.
For popular experiences such as Mount Teide tours, whale watching and major attractions, booking ahead is recommended, especially during school holidays and the busiest winter months.