Which is the cheapest UK airport to fly to Faro (Portugal) from?

[hannibalismisunderstood]

Hi,

I am trying to cost a possible holiday for next October to Portugal and really cannot see which UK airport is best to fly to Faro for 3 adults and 2 kids - I live in the centre of the UK so London or East Midlands/Birmingham or any other within reason would be okay... does anyone know which airport is likely to be cheaper better, especially with either a late Friday or weekend flight...

thanks

Don't forget to take into account how much parking at the airport costs and how much it will cost to get to the airport.

When I research flights I generally go on to the destination airport website, find out which airlines fly there and check prices with each airline. The only problem is that prices change on a regular basis and prices won't be available yet for next October.