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

Return flights

01 Oct - 15 Oct	British Airways	direct
07 Oct - 13 Oct	Eurowings
16 Oct - 22 Oct	Eurowings
22 Oct - 19 Nov	Eurowings
01 Oct - 13 Oct	Eurowings
08 Oct - 13 Oct	Eurowings
01 Oct - 06 Oct	British Airways	direct
08 Oct - 14 Oct	Eurowings
01 Oct - 13 Oct	British Airways	direct
07 Oct - 14 Oct	Eurowings
03 Oct - 11 Oct	Eurowings
27 Oct - 05 Nov	Eurowings
25 Oct - 04 Nov	British Airways
22 Oct - 05 Nov	Eurowings
30 Oct - 05 Nov	Eurowings
30 Oct - 06 Nov	Eurowings
27 Oct - 07 Nov	Eurowings
24 Oct - 03 Nov	Eurowings
23 Oct - 03 Nov	Eurowings
28 Oct - 05 Nov	Eurowings

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

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 October from $201

Return flights