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

Return flights

01 Dec - 31 Dec	PIA
01 Dec - 31 Jan	Turkish Airlines
18 Dec - 02 Jan	Turkish Airlines
10 Dec - 02 Jan	Turkish Airlines
11 Dec - 03 Jan	Turkish Airlines
19 Dec - 04 Jan	Turkish Airlines
01 Dec - 04 Jan	Turkish Airlines
13 Dec - 06 Jan	Turkish Airlines
19 Dec - 28 Dec	Turkish Airlines
09 Dec - 06 Jan	British Airways
20 Dec - 04 Jan	Turkish Airlines
25 Dec - 29 Dec	Emirates
24 Dec - 28 Dec	Emirates
17 Dec - 26 Dec	Emirates
31 Dec - 31 Jan	Turkish Airlines
17 Dec - 26 Dec	British Airways	direct

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 $773

Return flights