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

Return flights

31 Dec - 16 Jan	Wizz Air UK
31 Dec - 21 Jan	Wizz Air UK
31 Dec - 14 Jan	Wizz Air UK
08 Dec - 24 Dec	Wizz Air UK
08 Dec - 12 Jan	Wizz Air UK
10 Dec - 28 Jan	Wizz Air UK
14 Dec - 19 Dec	Wizz Air UK
11 Dec - 25 Dec	Ryanair
03 Dec - 07 Jan	Wizz Air UK
07 Dec - 24 Dec	Ryanair
03 Dec - 12 Dec	Wizz Air UK
01 Dec - 10 Dec	Ryanair
07 Dec - 14 Dec	Ryanair
05 Dec - 12 Dec	Ryanair
11 Dec - 12 Jan	Wizz Air UK
10 Dec - 18 Dec	Wizz Air UK
07 Dec - 13 Dec	Wizz Air
15 Dec - 13 Jan	Wizz Air UK
17 Dec - 21 Jan	Wizz Air UK
15 Dec - 10 Jan	Wizz Air UK

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 589€

Return flights