If you want an honest answer to the question” how long does it take to become fluent in Spanish” based on my personal experience and what I have read I can say that it really depends on you.
That’s right it is not just enough to go to a class to learn Spanish to speak fluently in Spanish you have to use it all the time.
Here is an example is a classic example to prove this point
Example 1
You may have joined a college in United Kingdom to learn Spanish. The classes there will be conducted by English speaking teachers who will train you to understand Spanish language.
The campus that you may be living in, will in all probabilities be inhabited by non Spanish speaking students.
In such circumstances, when you go back home chances are that you may not at all be fluently speaking Spanish even after attending the course for months together.
This is because you are missing out one important factor that is use the language all the time.
The answer to the question how long does it take to become fluent in Spanish will change completely if you actually make efforts to speak, see and talk Spanish deliberately. Here’s how it will happen in
Example 2
Continuing with the same example in addition to attending Spanish classes if you stay as a house guest with a family which speaks Spanish mostly, with very little or no English at all you will pick up the language quite easily.
In addition to surrounding yourself with people communicating in Spanish it will also help if you watch tv shows and movies in Spanish (original version) without subtitles. This way you will be immersed and exposed to the language all the time and you are bound to learn and speak fluently in Spanish real fast.
So you may yourself manage to answer the question “how long does it take to become fluent in Spanish” under these circumstances. In my opinion even if you do not have a knack for languages and are just an average like me you can pick it up in a year’s time.