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

Return flights

06 Sep - 06 Oct	Wizz Air Malta
12 Sep - 25 Sep	Wizz Air UK
09 Sep - 25 Sep	Wizz Air UK
04 Sep - 16 Oct	Wizz Air UK
09 Sep - 23 Sep	Wizz Air UK
28 Sep - 01 Oct	Wizz Air
08 Sep - 18 Sep	Wizz Air UK
15 Sep - 24 Sep	Wizz Air Malta
24 Sep - 30 Sep	Wizz Air UK
24 Sep - 20 Oct	Wizz Air UK
13 Sep - 18 Sep	Wizz Air UK
10 Sep - 18 Sep	Wizz Air Malta
20 Sep - 23 Sep	Wizz Air Malta
02 Sep - 18 Sep	Wizz Air UK
08 Sep - 19 Oct	Wizz Air UK
23 Sep - 01 Oct	Wizz Air UK
27 Sep - 22 Oct	Wizz Air Malta
04 Sep - 19 Oct	Wizz Air UK
13 Sep - 18 Oct	Ryanair
29 Sep - 13 Oct	Wizz Air UK

Also check the deals for one-way flights from London to Karachi in September.

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 September from $426

Return flights