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

Return flights

18 Dec - 15 Jan	AZAL
11 Dec - 15 Jan	AZAL
07 Dec - 10 Jan	AZAL
04 Dec - 11 Dec	Fly Jinnah
07 Dec - 11 Jan	AZAL
04 Dec - 30 Dec	Fly Jinnah
18 Dec - 13 Jan	AZAL
21 Dec - 02 Jan	AZAL
11 Dec - 08 Jan	AZAL
07 Dec - 08 Jan	AZAL
14 Dec - 08 Jan	AZAL
03 Dec - 11 Jan	Fly Jinnah
11 Dec - 30 Dec	AZAL
18 Dec - 26 Dec	AZAL
06 Dec - 09 Dec	Etihad Airways
01 Dec - 05 Dec	Fly Jinnah
01 Dec - 31 Dec	Fly Jinnah
05 Dec - 08 Dec	Fly Jinnah
11 Dec - 31 Dec	Fly Jinnah
02 Dec - 14 Dec	Fly Jinnah

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 368€

Return flights