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

Return flights

27 Aug - 18 Sep	AJet
26 Aug - 13 Sep	AJet
21 Aug - 20 Sep	AJet
26 Aug - 22 Sep	AJet
30 Aug - 20 Sep	AJet
26 Aug - 29 Sep	AJet
29 Aug - 13 Sep	AJet
31 Aug - 09 Sep	AJet
01 Aug - 08 Aug	AJet
01 Aug - 04 Aug	AJet
03 Aug - 08 Aug	AJet
02 Aug - 10 Sep	AJet
16 Aug - 20 Sep	Pegasus Airlines
08 Aug - 15 Aug	AZAL
20 Aug - 27 Aug	AJet
06 Aug - 13 Aug	AJet
05 Aug - 08 Aug	AJet
28 Aug - 29 Aug	Pegasus Airlines
11 Aug - 17 Aug	Pegasus Airlines
01 Aug - 06 Aug	Pegasus Airlines

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

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 August from $442

Return flights