Cheapest return flights from London to Istanbul in May from $244

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

Return flights

06 May - 11 May KLM
14 May - 18 May KLM
15 May - 18 May KLM
05 May - 18 May KLM
04 May - 08 May KLM
09 May - 11 May KLM
20 May - 02 Jun KLM
28 May - 01 Jun KLM
29 May - 02 Jun KLM
04 May - 11 May KLM
06 May - 18 May KLM
06 May - 14 May KLM
07 May - 14 May KLM
29 May - 01 Jun KLM
10 May - 01 Jun KLM
29 May - 10 Jun KLM
20 May - 18 Jun KLM
28 May - 04 Jun KLM
14 May - 18 Jun KLM
18 May - 03 Jun KLM

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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