Cheapest one-way flights from London to Istanbul in April from $138

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

One-Way flights

13 Apr KLM
08 Apr KLM
09 Apr KLM
15 Apr KLM
21 Apr KLM
16 Apr KLM
11 Apr KLM
04 Apr KLM
23 Apr KLM
10 Apr KLM

Also check the deals for return flights from London to Istanbul in April.

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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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