February next year is too far ahead. Better book in November.
I generally trust Mobissimo. It is meta-search - this means that it searches the other websites for you.
Another good site is http://www.Vayama.com
Here from time to time Lessno.com publish some prices and they do not promote one and only lessno, but announce other good deals too: http://blog.lessno.com
a budget one such as jet2 and easy jet.