Regular buses: Every day (from 26.12.2018 till 10.04.2019): From Tbilisi airport - at 18.30-19:30. The bus will stop for 5 minutes near Avlabari metro station, where you can sit in the bus. From the metro station the bus will depart at 18.50-19:50. From Gudauri - at 10:00-11.00. The driver can stop the bus near Avlabari metro station on your request. The price for one way is 50 gel (~13$), round trip – 90 gel (~25$). Read more here.