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

Return flights

24 Sep - 16 Oct	Lufthansa
25 Sep - 28 Sep	Lufthansa
24 Sep - 15 Oct	Lufthansa
19 Sep - 28 Sep	Lufthansa
05 Sep - 11 Sep	Aegean Airlines
04 Sep - 15 Sep	Aegean Airlines
02 Sep - 09 Sep	AJet
16 Sep - 27 Sep	Lufthansa
02 Sep - 16 Sep	MEA
06 Sep - 11 Sep	Aegean Airlines
02 Sep - 23 Sep	SunExpress
25 Sep - 28 Sep	MEA	direct
24 Sep - 16 Oct	MEA	direct

Also check the deals for one-way flights from Beirut to London 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 Beirut to London in September from 385€

Return flights