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

Return flights

15 Sep - 29 Oct	Wizz Air UK
22 Sep - 03 Oct	Wizz Air UK
15 Sep - 03 Oct	Wizz Air UK
18 Sep - 15 Oct	Wizz Air UK
16 Sep - 27 Sep	Wizz Air UK
15 Sep - 17 Oct	Wizz Air UK
19 Sep - 03 Oct	Wizz Air UK
24 Sep - 22 Oct	Wizz Air UK
22 Sep - 29 Sep	Wizz Air UK
25 Sep - 10 Oct	Wizz Air UK
25 Sep - 29 Sep	Wizz Air UK
20 Sep - 27 Sep	Wizz Air UK
23 Sep - 04 Oct	Wizz Air UK
16 Sep - 02 Oct	Wizz Air
17 Sep - 30 Sep	Wizz Air UK
15 Sep - 23 Sep	Wizz Air UK
09 Sep - 30 Sep	Wizz Air
18 Sep - 23 Sep	Wizz Air UK
15 Sep - 30 Sep	Wizz Air UK
15 Sep - 19 Sep	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 374€

Return flights