Cheapest return flights from London to Istanbul in December from 172€

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

Return flights

08 Dec - 17 Dec KLM
08 Dec - 18 Dec KLM
01 Dec - 10 Dec KLM
01 Dec - 05 Dec KLM
01 Dec - 11 Dec KLM
05 Dec - 22 Dec KLM
30 Dec - 15 Jan KLM
05 Dec - 07 Dec KLM
09 Dec - 16 Dec KLM
10 Dec - 16 Dec KLM
10 Dec - 15 Dec KLM
08 Dec - 12 Jan KLM
31 Dec - 28 Jan KLM
29 Dec - 21 Jan KLM
06 Dec - 14 Jan KLM
12 Dec - 18 Jan KLM
29 Dec - 23 Jan KLM
29 Dec - 12 Jan KLM
10 Dec - 11 Jan KLM
29 Dec - 11 Jan KLM

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

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