My sister-in-law has taken the train from Balsicas to Murcia and said it was great.
As for full journey from Alicante airport, google maps does a pretty good job of best options depending on your arrival time. There are a number of routes and combinations. Probably the choice of direct bus from the airport to Murcia and then onwards by bus or train to Balsicas or Roldan are preferable if they match your arrival times.
The quickest route is bus from the airport to Murcia bus station (1hr), 26 or 28 bus transfer to Murcia train station (Almeda de colon (jardin) 4 stops 5 minutes) then a train to Balsicas (30 minutes) total around 2hrs including transfers.
Alsa bus + Lat bus 26/28 + Renfe Train to Balsicas = €5.19 + €1.85 + €3.65 (from)
Alsa bus + Lat bus 70 to Balsicas = €5.19 + €2.90
Alsa bus + Lycar bus to Roldan = €5.19 + €2.90
Further information
Alicante airport to Murcia Alsa Bus timetables and costs
Murcia to Balsicas Lat Bus timetables and costs
Mutcia to Roldan Movelia Bus timetables and costs
Murcia to Balsicas Renfe Train timetables and costs
Taxi from Balsicas or Roldan is around 10€
When you add all that up, you are talking €30 for two people or €50 for four people. You could get a taxi door to door for 100€ which takes about an hour and a LOT less hassle. Again, my sister-in-law chose this option after investigating the above and said it was hassle free and worth the time savings.
This message was last edited by DuncanMcG on 01/04/2017.