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

Return flights

12 Sep - 10 Oct	Wizz Air UK
10 Sep - 24 Sep	Wizz Air UK
10 Sep - 15 Sep	Wizz Air UK
16 Sep - 28 Sep	Wizz Air
28 Sep - 09 Oct	Wizz Air UK
15 Sep - 24 Sep	Wizz Air UK
13 Sep - 28 Sep	Wizz Air UK
28 Sep - 05 Oct	Wizz Air UK
08 Sep - 24 Sep	Wizz Air UK
03 Sep - 24 Sep	Wizz Air UK
09 Sep - 07 Oct	Wizz Air UK
03 Sep - 30 Sep	Wizz Air
07 Sep - 14 Sep	Wizz Air UK
10 Sep - 28 Sep	Wizz Air UK
10 Sep - 08 Oct	Wizz Air UK
01 Sep - 01 Oct	Ryanair
10 Sep - 30 Oct	Wizz Air UK
24 Sep - 12 Oct	Wizz Air UK
27 Sep - 04 Oct	Ryanair
24 Sep - 03 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 386€

Return flights