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

Return flights

15 Sep - 22 Sep	AJet
17 Sep - 22 Sep	AJet
14 Sep - 15 Oct	AJet
20 Sep - 22 Sep	AJet
04 Sep - 08 Sep	AJet
01 Sep - 08 Sep	AJet
05 Sep - 08 Sep	AJet
03 Sep - 16 Sep	AJet
25 Sep - 29 Sep	AJet
21 Sep - 25 Sep	AJet
18 Sep - 21 Sep	AJet
17 Sep - 02 Oct	AJet
28 Sep - 13 Oct	AJet
25 Sep - 02 Oct	AJet
12 Sep - 02 Oct	AJet
01 Sep - 20 Oct	AJet
25 Sep - 02 Oct	Turkish Airlines	direct
14 Sep - 15 Oct	Turkish Airlines	direct
17 Sep - 02 Oct	Turkish Airlines	direct
01 Sep - 20 Oct	Turkish Airlines	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 100€

Return flights