Cheapest return flights from London to Istanbul in April from $242

Best time to book flights for London (LON) to Istanbul (IST) flights at AirHint

AirHint found the following cheapest return flights from London (LON) to Istanbul (IST) in April 2025 (see full year).

Return flights

23 Apr - 06 May Turkish Airlines direct
11 Apr - 16 Apr Lufthansa
08 Apr - 15 Apr LOT
06 Apr - 14 Apr Lufthansa
10 Apr - 16 Apr LOT
19 Apr - 23 Apr Lufthansa
04 Apr - 10 Apr LOT
03 Apr - 10 Apr LOT
04 Apr - 09 Apr LOT
04 Apr - 16 Apr LOT
07 Apr - 15 Apr LOT
11 Apr - 05 May Turkish Airlines direct

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

Skyscanner

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