CheapFlights.gr will find you the cheapest flights from Athens to Tbilisi, comparing the cost of the flight to Tbilisi with 45 agencies, 5 booking systems and 718 airlines. Where to buy Athens - Tbilisi plane tickets - it's up to you.
It should be noted that depending on the number of days left before departure, the price of a ticket for a Athens - Tbilisi plane can change by more than 59%.
CheapFlights.gr suggests buying air tickets Athens - Tbilisi in advance, then you can choose the conditions of the flight, focusing on your wishes and financial opportunities.