Cheapest return flights from London to Istanbul in May from $219

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

Return flights

15 May - 18 May KLM
05 May - 18 May KLM
05 May - 11 May KLM
14 May - 18 May KLM
09 May - 18 May KLM
06 May - 18 May KLM
28 May - 01 Jun KLM
28 May - 02 Jun KLM
09 May - 11 May British Airways direct
06 May - 11 May British Airways direct
10 May - 11 May Air Serbia
15 May - 17 May Air Serbia
18 May - 03 Jun Air Serbia
17 May - 03 Jun Air Serbia
16 May - 12 Jun Air Serbia
17 May - 03 Jun British Airways direct
29 May - 10 Jun British Airways direct
10 May - 06 Jun British Airways direct
24 May - 02 Jun Scandinavian Airlines
29 May - 03 Jun British Airways direct

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

Powered by

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.

Book a cheap hotel in Istanbul

Cheap car rent in Istanbul

Feel free to contact us with any feedback or request another flight research.