AirHint found the following cheapest return flights from London (LHR) to Tehran (IKA) in October 2025 (see full year).

Return flights

01 Oct - 20 Oct	SWISS
14 Oct - 21 Oct	Turkish Airlines
07 Oct - 14 Oct	Turkish Airlines
08 Oct - 14 Oct	Turkish Airlines
02 Oct - 05 Oct	Turkish Airlines
12 Oct - 23 Nov	Turkish Airlines
01 Oct - 15 Oct	Turkish Airlines
31 Oct - 12 Nov	Eurowings
03 Oct - 18 Oct	Turkish Airlines
04 Oct - 18 Oct	Turkish Airlines
21 Oct - 28 Nov	Turkish Airlines
24 Oct - 07 Nov	Aegean Airlines
17 Oct - 31 Oct	LOT
04 Oct - 30 Oct	Turkish Airlines
21 Oct - 02 Nov	LOT
06 Oct - 03 Nov	Austrian Airlines
30 Oct - 30 Nov	Emirates

Also check the deals for one-way flights from London to Tehran in October.

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 Tehran in October from 398€

Return flights