AirHint found the following cheapest return flights from Washington (IAD) to Tbilisi (TBS) in December 2025 (see full year).

Return flights

03 Dec - 15 Dec	British Airways
01 Dec - 12 Dec	Turkish Airlines
03 Dec - 12 Dec	Turkish Airlines
01 Dec - 08 Dec	Turkish Airlines
06 Dec - 10 Jan	TAP
07 Dec - 09 Jan	TAP
08 Dec - 15 Jan	Turkish Airlines
08 Dec - 09 Jan	TAP
27 Dec - 11 Jan	Lufthansa
14 Dec - 22 Dec	KLM
07 Dec - 11 Dec	Turkish Airlines
27 Dec - 09 Jan	Lufthansa
27 Dec - 08 Jan	Lufthansa
27 Dec - 10 Jan	Lufthansa
24 Dec - 07 Jan	Austrian Airlines
27 Dec - 05 Jan	Lufthansa
17 Dec - 27 Dec	Aer Lingus

Also check the deals for one-way flights from Washington to Tbilisi in December.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Washington to Tbilisi in December from $719

Return flights