Getting to Haifa from Ben Gurion Airport: 

A direct train from the Ben Gurion Airport to Carmel Beach (Hof HaCarmel) Station in Haifa leaves twice an hour during weekdays and every hour during weeknights (weekend schedule is thinner). Information can be found at Israel-Railways web site

There is a service taxi or van service (called ‘sherut’) which departs from the airport whenever the car fills up, and takes you to Haifa for a reasonable rate of 115NIS ($30).

Getting to the University of Haifa from inside Haifa

If you want to come by private car, please take into considerations that you’ll need an entrance permit to enter the campus with a car. This must be arranged in advance (please inform us). Public transportation (buses and service taxis) are working frequently, and they cost approximately $1.80. The main lines are 46/146 (from Hof HaCarmel station) and 37 (Bat-Galim station) from hotels on the Carmel to the University and back.
See further details for public transportation at Egged