Private tours
Your own guide, your own pace, priced per group rather than per person on most listings.
Prices run from €18 to €360, and half of the 20 priced listings cost €124 or less. Most take 2 hours to 6 hours. The best reviewed with at least 100 reviews is Bilbao: Private & Exclusive Guggenheim Museum Guided Tour (4.8 from 332 reviews). The most reviewed is Bilbao: Private Walking Tour with a Local (343 reviews).
For the operators we researched and recommend, see our food tours and cooking classes in Bilbao, or the experiences overview.