if you are booked on a coach with your tour company a typical transfer for a full coach can take around 3 hours
A taxi to Icmeler from the airport would cost around £60
You could if you want book either a shuttle bus, which is normally a minibus fro around £15 per person return this takes around 1 hour 40 minutes. You could book a private transfer which takes arouind 1 H 20 minutes and costs around £80/£100 return