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

Return flights

06 Apr - 13 Apr	KLM
04 Apr - 14 Apr	KLM
10 Apr - 19 Apr	KLM
24 Apr - 27 Apr	Lufthansa
17 Apr - 27 Apr	Lufthansa
20 Apr - 27 Apr	Lufthansa
11 Apr - 16 Apr	SWISS
17 Apr - 20 Apr	Lufthansa
14 Apr - 21 Apr	ITA Airways
09 Apr - 12 Apr	KLM
22 Apr - 13 May	SWISS
30 Apr - 03 May	SWISS
24 Apr - 04 May	Lufthansa
30 Apr - 31 May	KLM
30 Apr - 08 May	SWISS
23 Apr - 03 May	Lufthansa
24 Apr - 15 May	KLM
17 Apr - 15 May	KLM
29 Apr - 03 May	KLM
28 Apr - 03 May	KLM

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

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 April from 207€

Return flights