Cheapest return flights from London to Istanbul in December from $246

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

Return flights

01 Dec - 21 Dec KLM
01 Dec - 04 Dec KLM
02 Dec - 04 Jan KLM
16 Dec - 23 Dec Lufthansa
07 Dec - 09 Dec Lufthansa
15 Dec - 20 Dec KLM
23 Dec - 20 Jan Lufthansa
23 Dec - 30 Dec Lufthansa
17 Dec - 31 Dec Lufthansa
15 Dec - 03 Jan KLM
21 Dec - 23 Dec Lufthansa
18 Dec - 15 Jan Lufthansa
21 Dec - 30 Dec Lufthansa
18 Dec - 30 Dec Lufthansa
20 Dec - 06 Jan KLM
23 Dec - 02 Jan ITA Airways
19 Dec - 03 Jan KLM
26 Dec - 08 Jan ITA Airways
31 Dec - 03 Jan Luxair
18 Dec - 03 Jan SWISS

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

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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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