If you can be flexible with your holiday dates, then there are plenty of great bargains just waiting to be snapped up! If you can, it is cheaper and often quieter when you book outside of the school holidays. If not, consider travelling at the beginning or end of the school holidays, and avoid weekend flights, which are often more expensive.
There are some great deals when you depart from regional airports, which may also save you money on travelling further a field to some of the larger airports like Gatwick and Manchester.
The Co-operative Travel tip: If you don't have many holidays left, why not consider a 4, 5 or 6 night holiday? This will use up less holiday entitlement and can work out a lot cheaper than the standard 7 nights.