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

Return flights

31 Dec - 28 Jan	Eurowings
30 Dec - 27 Jan	Turkish Airlines
31 Dec - 24 Jan	Eurowings
29 Dec - 29 Jan	Turkish Airlines
31 Dec - 31 Jan	Turkish Airlines
30 Dec - 30 Jan	Eurowings
31 Dec - 29 Jan	Turkish Airlines
31 Dec - 30 Jan	Eurowings
31 Dec - 22 Jan	Eurowings
30 Dec - 22 Jan	Turkish Airlines
26 Dec - 29 Dec	Eurowings
25 Dec - 31 Dec	Eurowings
25 Dec - 29 Dec	AZAL
24 Dec - 31 Dec	Vueling Airlines
28 Dec - 31 Dec	Austrian Airlines
26 Dec - 27 Dec	British Airways
23 Dec - 31 Dec	SWISS
25 Dec - 27 Dec	Austrian Airlines
23 Dec - 29 Dec	SWISS
24 Dec - 29 Dec	Emirates

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.

Book a cheap hotel in Tehran

Cheap car rent in Tehran

Cheapest return flights from London to Tehran in December from 291€

Return flights