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

Return flights

01 Dec - 12 Dec	Eurowings
01 Dec - 07 Dec	British Airways
02 Dec - 11 Dec	Vueling Airlines
02 Dec - 15 Dec	Vueling Airlines
02 Dec - 21 Jan	Vueling Airlines
02 Dec - 23 Jan	Vueling Airlines
01 Dec - 15 Dec	KLM
02 Dec - 19 Jan	Vueling Airlines
03 Dec - 13 Dec	Eurowings
06 Dec - 13 Dec	Lufthansa
03 Dec - 10 Dec	Saudia
01 Dec - 08 Dec	Saudia
07 Dec - 16 Dec	Eurowings
07 Dec - 11 Jan	Eurowings
07 Dec - 03 Jan	Eurowings
30 Dec - 14 Jan	Etihad Airways
24 Dec - 21 Jan	Eurowings
09 Dec - 19 Jan	Eurowings
21 Dec - 21 Jan	Aegean Airlines
01 Dec - 12 Jan	Saudia

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 418€

Return flights