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

Return flights

05 Dec - 19 Jan	Fly Jinnah
09 Dec - 19 Jan	Fly Jinnah
20 Dec - 18 Jan	Fly Jinnah
06 Dec - 19 Jan	Fly Jinnah
08 Dec - 19 Jan	AZAL
08 Dec - 09 Dec	AZAL
08 Dec - 11 Jan	AZAL
15 Dec - 30 Dec	Fly Jinnah
20 Dec - 10 Jan	Fly Jinnah
10 Dec - 28 Jan	Fly Jinnah
09 Dec - 20 Jan	Fly Jinnah
10 Dec - 13 Jan	Fly Jinnah
22 Dec - 31 Dec	Fly Jinnah
13 Dec - 16 Dec	Fly Jinnah
18 Dec - 31 Dec	AZAL
07 Dec - 30 Dec	PIA
01 Dec - 15 Dec	Fly Jinnah
15 Dec - 18 Dec	AZAL
18 Dec - 25 Dec	AZAL
11 Dec - 18 Dec	AZAL

Also check the deals for one-way flights from Islamabad to London 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 Islamabad to London in December from 400€

Return flights