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

Return flights

21 Jan - 22 Jan	Air Serbia
14 Jan - 15 Jan	Air Serbia
15 Jan - 16 Jan	Air Serbia
22 Jan - 23 Jan	Air Serbia
18 Jan - 19 Jan	Air Serbia
14 Jan - 16 Jan	Air Serbia
17 Jan - 19 Jan	Air Serbia
16 Jan - 17 Jan	Air Serbia
21 Jan - 23 Jan	Air Serbia
30 Jan - 01 Feb	Air Serbia
16 Jan - 31 Jan	Air Serbia
27 Jan - 04 Feb	Air Serbia
28 Jan - 05 Feb	Air Serbia
27 Jan - 10 Feb	Air Serbia
29 Jan - 05 Feb	Air Serbia
14 Jan - 01 Feb	Air Serbia
29 Jan - 10 Feb	Air Serbia
27 Jan - 01 Feb	Air Serbia
31 Jan - 07 Feb	Air Serbia
30 Jan - 02 Feb	Air Serbia

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 $184

Return flights