Cheapest return flights from London to Istanbul in April from $225

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

Return flights

26 Apr - 30 Apr Air Serbia
19 Apr - 30 Apr Air Serbia
13 Apr - 18 Apr Air Serbia
10 Apr - 28 Apr Air Serbia
10 Apr - 18 Apr Air Serbia
06 Apr - 10 Apr Air Serbia
26 Apr - 01 May Air Serbia
29 Apr - 03 May British Airways direct
08 Apr - 15 Apr KLM
02 Apr - 20 Apr KLM
11 Apr - 20 Apr KLM
17 Apr - 20 Apr KLM
25 Apr - 03 May British Airways direct
29 Apr - 05 May British Airways direct
24 Apr - 03 May British Airways direct
29 Apr - 14 May British Airways direct
22 Apr - 13 May British Airways direct
27 Apr - 07 May British Airways direct
21 Apr - 12 May British Airways direct
24 Apr - 01 May Air Serbia

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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