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

Return flights

25 Sep - 09 Oct	Pegasus Airlines
25 Sep - 19 Oct	Pegasus Airlines
18 Sep - 19 Oct	Pegasus Airlines
24 Sep - 09 Oct	AJet
19 Sep - 10 Oct	Pegasus Airlines
21 Sep - 05 Oct	Pegasus Airlines
26 Sep - 05 Oct	AJet
27 Sep - 05 Oct	Pegasus Airlines
28 Sep - 05 Oct	Pegasus Airlines
28 Sep - 06 Oct	Pegasus Airlines
26 Sep - 28 Sep	AJet
22 Sep - 29 Sep	Pegasus Airlines
27 Sep - 30 Sep	Pegasus Airlines
28 Sep - 30 Sep	Pegasus Airlines
18 Sep - 28 Sep	Pegasus Airlines
19 Sep - 27 Sep	Pegasus Airlines
23 Sep - 28 Sep	AJet
19 Sep - 28 Sep	AJet
21 Sep - 28 Sep	Pegasus Airlines
19 Sep - 23 Sep	Pegasus Airlines

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 $719

Return flights