Cheapest return flights from London to Istanbul in April from $218

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

Return flights

08 Apr - 16 Apr KLM
13 Apr - 21 Apr KLM
13 Apr - 22 Apr KLM
10 Apr - 21 Apr KLM
07 Apr - 21 Apr KLM
09 Apr - 14 Apr KLM
07 Apr - 13 Apr KLM
16 Apr - 22 Apr KLM
10 Apr - 15 Apr KLM
14 Apr - 21 Apr KLM
25 Apr - 09 May British Airways direct
18 Apr - 02 May British Airways direct
25 Apr - 02 May British Airways direct
22 Apr - 06 May British Airways direct
21 Apr - 06 May British Airways direct
20 Apr - 07 May Air Serbia
20 Apr - 01 May Air Serbia
26 Apr - 01 May Air Serbia
30 Apr - 07 May Air Serbia
27 Apr - 01 May Air Serbia

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.