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

Return flights

12 Mar - 17 Mar	KLM
05 Mar - 07 Mar	KLM
05 Mar - 08 Mar	KLM
13 Mar - 15 Mar	British Airways	direct
02 Mar - 09 Mar	British Airways	direct
12 Mar - 15 Mar	British Airways	direct
03 Mar - 10 Mar	British Airways	direct
04 Mar - 11 Mar	British Airways	direct
11 Mar - 18 Mar	British Airways	direct
13 Mar - 16 Mar	British Airways	direct
01 Mar - 01 Apr	KLM
24 Mar - 14 Apr	KLM
01 Mar - 01 Apr	Turkish Airlines	direct
25 Mar - 04 Apr	KLM
16 Mar - 13 Apr	Air France
31 Mar - 03 Apr	Aegean Airlines
30 Mar - 08 Apr	LOT
28 Mar - 13 Apr	LOT
29 Mar - 02 Apr	KLM
27 Mar - 13 Apr	LOT

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

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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Cheapest return flights from London to Istanbul in March from 167€

Return flights