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

Return flights

23 Sep - 02 Oct	AJet
15 Sep - 18 Sep	AJet
25 Sep - 14 Oct	AJet
25 Sep - 04 Oct	AJet
10 Sep - 15 Sep	Pegasus Airlines
22 Sep - 30 Sep	AJet
25 Sep - 27 Sep	AJet
03 Sep - 16 Sep	Pegasus Airlines
20 Sep - 24 Sep	AJet
21 Sep - 25 Sep	AJet
09 Sep - 14 Sep	AJet
15 Sep - 19 Sep	AJet
15 Sep - 01 Oct	AJet
07 Sep - 20 Sep	AJet
29 Sep - 09 Oct	Turkish Airlines
25 Sep - 14 Oct	Turkish Airlines	direct
23 Sep - 02 Oct	Turkish Airlines	direct
15 Sep - 01 Oct	Turkish Airlines	direct
29 Sep - 09 Oct	MEA	direct

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 120€

Return flights