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

Return flights

23 May - 07 Jun	KLM
07 May - 11 May	SWISS
07 May - 14 May	SWISS
26 May - 04 Jun	KLM
21 May - 28 Jun	KLM
27 May - 04 Jun	KLM
21 May - 01 Jun	KLM
08 May - 12 May	Lufthansa
28 May - 01 Jun	KLM
28 May - 04 Jun	KLM
08 May - 10 May	Lufthansa
07 May - 10 May	Lufthansa
12 May - 02 Jun	KLM
11 May - 14 May	KLM
07 May - 18 May	KLM
21 May - 02 Jun	KLM
26 May - 02 Jun	KLM
07 May - 12 May	KLM
21 May - 28 May	Lufthansa
27 May - 31 May	KLM

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

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 May from 311€

Return flights