Cheapest return flights from London to Istanbul in December from $244

AirHint found the following cheapest return flights from London (LCY) to Istanbul (IST) in December 2025 (see full year).

Return flights

31 Dec - 14 Jan KLM
08 Dec - 14 Dec KLM
08 Dec - 16 Dec KLM
08 Dec - 11 Dec KLM
08 Dec - 15 Dec KLM
08 Dec - 17 Dec KLM
08 Dec - 12 Dec KLM
08 Dec - 18 Jan KLM
01 Dec - 15 Dec KLM
01 Dec - 16 Dec KLM
01 Dec - 05 Dec KLM
01 Dec - 09 Dec KLM
30 Dec - 14 Jan KLM
03 Dec - 13 Jan KLM
31 Dec - 11 Jan KLM
31 Dec - 12 Jan KLM
09 Dec - 13 Jan Lufthansa
10 Dec - 15 Jan Lufthansa
31 Dec - 07 Jan KLM
10 Dec - 12 Jan Lufthansa

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

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