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

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

Return flights

16 Apr - 21 Apr KLM
09 Apr - 20 Apr KLM
08 Apr - 14 Apr KLM
16 Apr - 22 Apr KLM
09 Apr - 15 Apr KLM
08 Apr - 13 Apr KLM
04 Apr - 13 Apr KLM
13 Apr - 22 Apr KLM
13 Apr - 21 Apr KLM
10 Apr - 21 Apr KLM
29 Apr - 08 May KLM
23 Apr - 11 May KLM
23 Apr - 12 May KLM
22 Apr - 29 May KLM
15 Apr - 05 May KLM
07 Apr - 05 May KLM
30 Apr - 05 May KLM
28 Apr - 05 May KLM
22 Apr - 07 May KLM
28 Apr - 07 May KLM

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

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.