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

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

Return flights

19 May - 21 May Air Serbia
20 May - 21 May Air Serbia
26 May - 01 Jun Air Serbia
07 May - 12 May Air Serbia
18 May - 23 May Air Serbia
19 May - 22 May Air Serbia
19 May - 26 May Air Serbia
27 May - 31 May Air Serbia
12 May - 15 May Air Serbia
15 May - 19 May Air Serbia
21 May - 26 May Air Serbia
20 May - 05 Jun Air Serbia
26 May - 02 Jun Air Serbia
29 May - 01 Jun Air Serbia
26 May - 10 Jun Air Serbia
27 May - 10 Jun Air Serbia
23 May - 07 Jun Air Serbia
26 May - 02 Jun British Airways direct
26 May - 10 Jun British Airways direct
27 May - 10 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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