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

Return flights

01 Dec - 01 Dec	Etihad Airways
24 Dec - 31 Dec	Turkish Airlines
13 Dec - 10 Jan	Qatar Airways
17 Dec - 23 Dec	Turkish Airlines
16 Dec - 21 Dec	Emirates
25 Dec - 31 Dec	Kuwait Airways
15 Dec - 30 Dec	British Airways

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 $757

Return flights