The distance from Antalya to Side can be covered by two forms of transport: bus or taxi (private transfer). The Antalya to Side bus will get you to the destination in 1 hour 40 minutes, the ticket price is from EUR 8 (including all changes on the route). The transfer will take you there in 1 hour 30 minutes, and you will have to pay for this a minimum of EUR 47. The Antalya to Side distance is 66 km.
If you are planning to take public transport, note that you will have to make some changes. You should add the trip from the airport to Antalya bus station to the bus travel time, and then – covering the distance from Manavgat to Side by shared taxi dolmus, as well. Besides, public transport is not available at night, so at this time of day you can get to the city only by taxi (transfers). However this travel option is rather cheap, but in comparison to taxi it is cost-efficient only in case you are travelling alone or in a small group of two. As for the currency, you should take either Turkish lira or Euros when travelling to Side.