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

Return flights

26 Aug - 26 Sep	Aegean Airlines
26 Aug - 20 Sep	Aegean Airlines
20 Aug - 28 Sep	British Airways
31 Aug - 27 Sep	Qatar Airways
31 Aug - 30 Sep	Qatar Airways
20 Aug - 14 Sep	British Airways
24 Aug - 18 Sep	Qatar Airways
31 Aug - 20 Sep	Qatar Airways
20 Aug - 17 Sep	Qatar Airways
20 Aug - 18 Sep	Qatar Airways
13 Aug - 20 Aug	British Airways
19 Aug - 26 Aug	Air India
14 Aug - 16 Aug	Air India
03 Aug - 17 Aug	Air India
04 Aug - 18 Aug	Air India
10 Aug - 17 Aug	Air India
04 Aug - 17 Aug	Air India
14 Aug - 21 Aug	Turkish Airlines
01 Aug - 16 Aug	Air India
01 Aug - 20 Aug	Air India

Also check the deals for one-way flights from London to Sylhet Osmani in August.

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 August from $1054

Return flights