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

Return flights

31 Dec - 27 Jan	Wizz Air UK
31 Dec - 21 Jan	Wizz Air UK
10 Dec - 14 Dec	easyJet
05 Dec - 12 Dec	Wizz Air
07 Dec - 12 Dec	Vueling Airlines
04 Dec - 11 Dec	Pegasus Airlines
24 Dec - 17 Jan	Wizz Air UK
07 Dec - 13 Dec	KLM
14 Dec - 19 Dec	Vueling Airlines
01 Dec - 15 Dec	Qatar Airways
31 Dec - 14 Jan	Qatar Airways
30 Dec - 14 Jan	Qatar Airways
31 Dec - 18 Jan	Qatar Airways
31 Dec - 23 Jan	Qatar Airways
31 Dec - 16 Jan	Qatar Airways
13 Dec - 20 Dec	LOT
29 Dec - 26 Jan	Kuwait Airways
10 Dec - 13 Jan	Austrian Airlines
10 Dec - 27 Dec	Austrian Airlines
03 Dec - 25 Dec	Qatar Airways

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

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 December from $688

Return flights