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

Return flights

02 Dec - 09 Dec	Ryanair
06 Dec - 09 Dec	Ryanair
03 Dec - 09 Dec	Pegasus Airlines
03 Dec - 31 Jan	Pegasus Airlines
08 Dec - 15 Jan	Ryanair
03 Dec - 16 Jan	Pegasus Airlines
31 Dec - 27 Jan	AJet
06 Dec - 11 Jan	Ryanair
06 Dec - 13 Jan	Ryanair
03 Dec - 23 Dec	AJet
04 Dec - 12 Dec	Pegasus Airlines
04 Dec - 11 Dec	Pegasus Airlines
07 Dec - 14 Jan	Jet2
03 Dec - 19 Dec	AJet
04 Dec - 20 Dec	Pegasus Airlines
31 Dec - 12 Jan	AJet
31 Dec - 13 Jan	AJet
31 Dec - 22 Jan	AJet
02 Dec - 16 Dec	Ryanair
09 Dec - 18 Dec	Ryanair

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

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 December from 185€

Return flights