AirHint found the following cheapest return flights from London (LCY) to Karachi (KHI) in December 2025 (see full year).

Return flights

03 Dec - 10 Dec	KLM
02 Dec - 09 Dec	British Airways
02 Dec - 12 Dec	British Airways
03 Dec - 17 Dec	British Airways
04 Dec - 17 Dec	British Airways
01 Dec - 12 Dec	British Airways
03 Dec - 11 Dec	British Airways
01 Dec - 21 Dec	British Airways
01 Dec - 07 Dec	British Airways
09 Dec - 26 Dec	British Airways
04 Dec - 01 Jan	KLM
01 Dec - 22 Jan	Air Dolomiti
08 Dec - 15 Jan	Air Dolomiti
05 Dec - 01 Jan	KLM
01 Dec - 25 Jan	Air Dolomiti
08 Dec - 01 Jan	Air Dolomiti
08 Dec - 11 Jan	Air Dolomiti
18 Dec - 12 Jan	KLM
17 Dec - 01 Jan	KLM
18 Dec - 01 Jan	KLM

Also check the deals for one-way flights from London to Karachi 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 London to Karachi in December from 454€

Return flights