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

Return flights

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

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 336€

Return flights