AirHint found the following cheapest return flights from London (LCY) to Istanbul (IST) in January 2026 (see full year).

Return flights

02 Jan - 15 Jan	KLM
21 Jan - 26 Jan	KLM
16 Jan - 26 Jan	KLM
09 Jan - 12 Jan	KLM
16 Jan - 18 Jan	KLM
30 Jan - 01 Feb	KLM
14 Jan - 18 Jan	KLM
16 Jan - 19 Jan	KLM
14 Jan - 19 Jan	KLM
22 Jan - 27 Jan	KLM
06 Jan - 27 Jan	KLM
14 Jan - 09 Feb	Lufthansa
12 Jan - 12 Feb	Lufthansa
29 Jan - 01 Feb	KLM
20 Jan - 02 Feb	KLM
13 Jan - 11 Feb	KLM
31 Jan - 06 Feb	ITA Airways
31 Jan - 08 Feb	ITA Airways

Also check the deals for one-way flights from London to Istanbul in January.

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 Istanbul in January from $243

Return flights