AirHint found the following cheapest return flights from London (LON) to Sylhet Osmani (ZYL) in September 2025 (see full year).

Return flights

26 Sep - 03 Oct	Wizz Air UK
19 Sep - 28 Sep	Wizz Air UK
26 Sep - 24 Oct	Wizz Air UK
22 Sep - 28 Sep	Wizz Air UK
21 Sep - 03 Oct	Pegasus Airlines
24 Sep - 03 Oct	Turkish Airlines
21 Sep - 28 Sep	Pegasus Airlines
26 Sep - 12 Oct	Wizz Air UK
21 Sep - 17 Oct	Pegasus Airlines
25 Sep - 17 Oct	Pegasus Airlines
21 Sep - 01 Oct	Pegasus Airlines
20 Sep - 03 Oct	Pegasus Airlines
27 Sep - 24 Oct	Pegasus Airlines
21 Sep - 26 Sep	Pegasus Airlines
24 Sep - 30 Sep	Pegasus Airlines
22 Sep - 29 Sep	AJet
19 Sep - 29 Sep	Pegasus Airlines
19 Sep - 26 Sep	Wizz Air UK
28 Sep - 29 Sep	Pegasus Airlines
19 Sep - 22 Sep	Wizz Air UK

Also check the deals for one-way flights from London to Sylhet Osmani 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 London to Sylhet Osmani in September from 565€

Return flights