Cheapest return flights from London to Istanbul in October from $349

Best time to book flights for London (LCY) to Istanbul (IST) flights at AirHint

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

Return flights

16 Oct - 20 Oct Lufthansa
17 Oct - 20 Oct Lufthansa
15 Oct - 22 Oct Lufthansa
01 Oct - 22 Oct Lufthansa
08 Oct - 14 Oct Lufthansa
01 Oct - 14 Oct Lufthansa
09 Oct - 14 Oct Lufthansa
07 Oct - 14 Oct Lufthansa
01 Oct - 06 Oct Lufthansa
01 Oct - 08 Oct Lufthansa
28 Oct - 03 Nov KLM
28 Oct - 09 Nov KLM
29 Oct - 02 Nov KLM
30 Oct - 03 Nov KLM
31 Oct - 03 Nov KLM
31 Oct - 05 Nov KLM
30 Oct - 02 Nov KLM
24 Oct - 02 Nov KLM
21 Oct - 04 Nov KLM
26 Oct - 12 Nov KLM

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

Skyscanner

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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