Age: 10-12 months

Q: When will my baby begin walking?

Answer: The onset of walking is extremely variable with some babies walking before 9 months and others waiting until around 18 months old. The average age is about 12 months, but if your child hasn't started taking steps by 18 months, talk to your doctor.

Source: https://www.pampers.co.uk/baby/development/article/when-do-babies-start-walking-your-babys-first-steps