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

Return flights

15 Jul - 29 Jul	Scandinavian Airlines
15 Jul - 07 Aug	Scandinavian Airlines
16 Jul - 22 Jul	SWISS
24 Jul - 31 Aug	Eurowings
21 Jul - 27 Jul	Eurowings
25 Jul - 24 Aug	Brussels Airlines
19 Jul - 14 Aug	Eurowings
19 Jul - 08 Aug	Eurowings
17 Jul - 23 Jul	Lufthansa
26 Jul - 23 Aug	Finnair
23 Jul - 14 Aug	Eurowings
24 Jul - 24 Aug	Eurowings
18 Jul - 27 Jul	Lufthansa
31 Jul - 24 Aug	Eurowings
09 Jul - 30 Jul	Eurowings
28 Jul - 11 Aug	Eurowings
21 Jul - 24 Jul	Aegean Airlines
14 Jul - 21 Jul	Turkish Airlines
18 Jul - 31 Jul	SWISS
23 Jul - 28 Jul	Eurowings

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

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 July from 387€

Return flights