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

Return flights

19 Dec - 22 Jan	Fly Jinnah
01 Dec - 10 Jan	Kuwait Airways
09 Dec - 30 Dec	PIA
16 Dec - 06 Jan	PIA
01 Dec - 10 Dec	Kuwait Airways
02 Dec - 18 Jan	PIA
22 Dec - 06 Jan	PIA
15 Dec - 04 Jan	PIA
17 Dec - 03 Jan	PIA
04 Dec - 01 Jan	Fly Jinnah
17 Dec - 02 Jan	PIA
20 Dec - 04 Jan	PIA
01 Dec - 08 Dec	Kuwait Airways
17 Dec - 26 Dec	PIA
03 Dec - 12 Dec	Fly Jinnah
15 Dec - 22 Dec	PIA
01 Dec - 18 Dec	Kuwait Airways
25 Dec - 31 Dec	Emirates
19 Dec - 28 Dec	Qatar Airways
07 Dec - 21 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 491€

Return flights