By Air: With an international airport in the form of Tbilisi International Airport, the city of Tbilisi is fairly connected to most of the important places around the world. The airport also comes with all the modern amenities including ATM's, free Wi-Fi, lounge, and sim-card stores. But as the airport is located at a distance of 17 kilometers from the city center, you have to make use of either bus, train, or taxi services to get inside the city.
By Train: Tbilisi has domestic and international trains running between Tbilisi and the prime cities of Poti, Batumi, Gori, Zugdidi, and Baku, & Yerevan respectively. The trains are comfortable and the tickets for the journey can be purchased either in direct or booked online.
By Bus: Regular buses and Marshrutkas (mini bus) operate between Tbilisi and Batumi, Kazbegi, Azerbaijan, & some locations in Armenia. Apart from these locations, private bus operators also help connect Tbilisi with Turkey, Thessaloniki, and Athens.
By Ferry: Tbilisi is not connected directly through ferry. But you can get on a ferry from Ukraine to Batumi and from there you can reach Tbilisi by switching to other transports.
HOW TO GET AROUND TBILISI
By Metro: Tbilisi has a two-line metro system that operates daily from 6am to 11:59pm. Inside the metro, the station's names are announced both in Gregorian and in English to help the international travelers and there is also a map placed just above the carriage door for reference. To travel better, get a Metromani card and recharge it with a fair amount of cash based on your usage. It can be used to travel in metros, buses, and marshrutkas.
By Bus: Buses operating inside the city of Tbilisi are painted yellow in color and the general description of the route is displayed in the bus windows, but in Gregorian. To get clear information of the route and to know the right bus to board, check the electronic signs displayed in the bus stops. Use Metromani card to pay for your travel and make sure you keep a copy of the receipt. You can also travel by marshrutkas which are privately owned and help you access the streets.
By Taxi: Taxis in Tbilisi are again privately owned and help in getting around the city. As the taxis in Tbilisi don't run on meters, it is advisable to negotiate for the fare before going on a ride. If you don't know Russian or Gregorian seek the help of any of your local friends.