Travelling from the North or South, or Subic, it is better to stay on the NLEX and SCTEX expressways, unless you know your way through Balibago from either the Angeles or Dau exits off the NLEX.  

From Manila on the NLEX, continue north on to the SCTEX towards Tarlac, and Baguio.  Take the first exit to SCTEX-Clark North toll plaza.

From Tarlac and the North on the SCTEX take the first Clark exit SCTEX- CLARK North toll plaza,

From Subic take the SCTEX north towards Tarlac, and Baguio.  Pass the SCTEX-Clark-South exit and take the next exit to SCTEX-Clark North toll plaza.

At the rotunda (traffic island), take the 3rd exit (left), next rotunda take the 2nd exit (straight on), next rotunda straight on, next rotunda turn left following the appropriate signs.

Follow the road signs to the car parking area, get your ticket, park your car, secure it and walk the short distance to the airport departure terminal.

     Google PIN
     15.19580, 120.55639
      Mabalacat,   Pampanga

     Waze
     https://www.waze.com/live-
     map/directions?to=ll.15.19716%
     2C120.558879