AirHint found the following cheapest return flights from Istanbul (IST) to Beirut (BEY) in September 2025 (see full year).

Return flights

19 Sep - 21 Sep	AJet
28 Sep - 01 Oct	AJet
26 Sep - 28 Sep	AJet
30 Sep - 05 Oct	AJet
25 Sep - 28 Sep	AJet
26 Sep - 03 Oct	AJet
19 Sep - 22 Sep	AJet
30 Sep - 13 Oct	AJet
25 Sep - 27 Sep	AJet
23 Sep - 30 Sep	AJet
27 Sep - 29 Sep	AJet
30 Sep - 02 Oct	AJet
19 Sep - 28 Sep	AJet
21 Sep - 26 Sep	AJet
21 Sep - 24 Sep	AJet
19 Sep - 12 Oct	AJet
30 Sep - 09 Oct	Pegasus Airlines
26 Sep - 03 Oct	Pegasus Airlines	direct
19 Sep - 12 Oct	Pegasus Airlines	direct
28 Sep - 26 Oct	Turkish Airlines

Also check the deals for one-way flights from Istanbul to Beirut 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 Istanbul to Beirut in September from 104€

Return flights