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

Return flights

17 Sep - 04 Oct	Wizz Air UK
15 Sep - 11 Oct	Wizz Air UK
08 Sep - 15 Sep	Wizz Air UK
30 Sep - 02 Oct	Wizz Air UK
30 Sep - 10 Oct	Wizz Air UK
20 Sep - 03 Oct	Wizz Air UK
15 Sep - 10 Oct	Wizz Air UK
20 Sep - 05 Oct	Wizz Air UK
20 Sep - 24 Sep	Wizz Air UK
08 Sep - 23 Sep	Wizz Air UK
10 Sep - 26 Sep	Wizz Air UK
10 Sep - 19 Sep	Wizz Air UK
10 Sep - 21 Sep	Wizz Air UK
29 Sep - 15 Oct	Wizz Air UK
15 Sep - 30 Sep	Wizz Air UK
24 Sep - 09 Oct	easyJet
30 Sep - 15 Oct	easyJet
12 Sep - 27 Sep	easyJet
22 Sep - 29 Sep	easyJet
24 Sep - 28 Sep	easyJet

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

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 September from $313

Return flights