Cheapest return flights from London to Istanbul in May from 174€

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

Return flights

12 May - 26 May KLM
20 May - 02 Jun KLM
11 May - 25 May KLM
12 May - 18 May KLM
09 May - 18 May Air Serbia
17 May - 02 Jun Air Serbia
16 May - 18 May Air Serbia
05 May - 26 May British Airways direct
20 May - 26 May KLM
05 May - 19 May British Airways direct
15 May - 15 Jun British Airways direct
30 May - 09 Jun British Airways direct
08 May - 11 May KLM
07 May - 11 May KLM
26 May - 02 Jun KLM
27 May - 03 Jun KLM
28 May - 04 Jun British Airways direct
27 May - 03 Jun British Airways direct
26 May - 02 Jun British Airways direct
29 May - 04 Jun British Airways direct

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

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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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