Which airline are you flying with? BA's fuel surcharge, for example, only applies to tickets purchased from next Sunday onwards:
http://www.britishairways.com/travel/ba6.jsp/s eccharge/public/en_gb#3
(i.e. existing ticket holders, and those who book before Sunday, don't have to pay the surcharge).
Check the relevant website to find the information you require. (Alternatively, tell us who you're travelling with and we'll try to find the information. It's often 'buried deep' within a website).
Chris