Cheapest return flights from London to Istanbul in April from 166€

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

Return flights

21 Apr - 07 May KLM
29 Apr - 27 May KLM
21 Apr - 06 May KLM
13 Apr - 06 May KLM
10 Apr - 06 May KLM
09 Apr - 06 May KLM
13 Apr - 20 May KLM
29 Apr - 30 Apr KLM
12 Apr - 24 Apr British Airways direct
10 Apr - 29 Apr British Airways direct
25 Apr - 30 Apr British Airways direct
07 Apr - 29 Apr British Airways direct
10 Apr - 24 Apr British Airways direct
11 Apr - 25 Apr British Airways direct
22 Apr - 29 Apr British Airways direct
23 Apr - 27 Apr British Airways direct
25 Apr - 27 Apr British Airways direct
07 Apr - 06 May KLM
14 Apr - 19 May KLM
07 Apr - 07 May KLM

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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