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

Return flights

30 Sep - 20 Oct	Wizz Air
26 Sep - 20 Oct	Wizz Air
29 Sep - 16 Oct	Wizz Air UK
26 Sep - 16 Oct	Wizz Air
19 Sep - 10 Oct	Wizz Air UK
30 Sep - 12 Oct	Wizz Air
26 Sep - 15 Oct	Wizz Air
29 Sep - 06 Oct	Wizz Air
28 Sep - 12 Oct	Wizz Air UK
22 Sep - 06 Oct	Wizz Air
08 Sep - 29 Sep	Wizz Air UK
19 Sep - 29 Sep	Wizz Air UK
14 Sep - 19 Sep	Wizz Air UK
19 Sep - 30 Sep	Wizz Air UK
14 Sep - 25 Sep	Wizz Air UK
01 Sep - 16 Sep	Wizz Air UK
05 Sep - 29 Sep	Wizz Air UK
15 Sep - 29 Sep	Wizz Air Malta
05 Sep - 25 Sep	Wizz Air UK
02 Sep - 30 Sep	Wizz Air

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 375€

Return flights