Cheapest return flights from London to Istanbul in April from $187

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

Return flights

24 Apr - 26 Apr Air Serbia
17 Apr - 20 Apr Air Serbia
22 Apr - 25 Apr Air Serbia
20 Apr - 23 Apr Air Serbia
16 Apr - 19 Apr Air Serbia
12 Apr - 19 Apr Air Serbia
12 Apr - 24 Apr Air Serbia
21 Apr - 01 May Air Serbia
24 Apr - 01 May Air Serbia
04 Apr - 18 Apr Air Serbia
11 Apr - 18 Apr Air Serbia
25 Apr - 09 May Air Serbia
04 Apr - 11 Apr Air Serbia
27 Apr - 02 May British Airways direct
25 Apr - 09 May British Airways direct
21 Apr - 01 May British Airways direct
24 Apr - 01 May British Airways direct
30 Apr - 06 May Turkish Airlines direct
27 Apr - 04 May Lufthansa
27 Apr - 04 May Turkish Airlines direct

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

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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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