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

Return flights

28 Dec - 12 Jan	PIA
27 Dec - 11 Jan	Fly Jinnah
27 Dec - 15 Jan	Fly Jinnah
27 Dec - 23 Jan	Uzbekistan Airways
27 Dec - 31 Jan	Fly Jinnah
27 Dec - 06 Jan	Fly Jinnah
27 Dec - 10 Jan	Fly Jinnah
30 Dec - 09 Jan	Fly Jinnah
29 Dec - 15 Jan	Emirates
28 Dec - 31 Dec	flyadeal
27 Dec - 31 Dec	Fly Jinnah
27 Dec - 04 Jan	Uzbekistan Airways
27 Dec - 29 Dec	Uzbekistan Airways
29 Dec - 31 Dec	Emirates
30 Dec - 30 Dec	Emirates

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 638€

Return flights