AirHint found the following cheapest return flights from Tbilisi (TBS) to Istanbul (SAW) in September 2025 (see full year).

Return flights

05 Sep - 08 Sep	AJet	direct
04 Sep - 08 Sep	Pegasus Airlines	direct
30 Sep - 04 Oct	AJet	direct
29 Sep - 03 Oct	Pegasus Airlines	direct
28 Sep - 04 Oct	AJet	direct
05 Sep - 09 Sep	AJet	direct
21 Sep - 26 Oct	AJet	direct
29 Sep - 04 Oct	Pegasus Airlines	direct
05 Sep - 11 Sep	AJet	direct
18 Sep - 21 Sep	AJet	direct
12 Sep - 15 Sep	AJet	direct
24 Sep - 28 Sep	AJet	direct
17 Sep - 21 Sep	Pegasus Airlines	direct
13 Sep - 18 Sep	Pegasus Airlines	direct
02 Sep - 15 Sep	Pegasus Airlines	direct
30 Sep - 17 Oct	AZAL

Also check the deals for one-way flights from Tbilisi to Istanbul in September.

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 Tbilisi to Istanbul in September from $147

Return flights