Airport Delays

I am about to book my transfer back to Dalaman Airport. I have heard there are delays are the check point on the airport road and also in the airport. I am travelling from Icmeler on a Saturday evening and normally allow about 1 hour 20 minutes for my journey. Can anyone advise how long extra I should add on to my journey time? Dalaman is not an airport I like to hang around in!! Thanks 
