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

Return flights

31 Aug - 24 Sep	AJet
13 Aug - 24 Sep	Ryanair
28 Aug - 19 Sep	AJet
26 Aug - 26 Sep	AJet
28 Aug - 13 Sep	AJet
29 Aug - 12 Sep	Pegasus Airlines
20 Aug - 19 Sep	Ryanair
10 Aug - 21 Sep	Ryanair
08 Aug - 22 Sep	Ryanair
28 Aug - 18 Sep	AJet
11 Aug - 15 Aug	Ryanair
08 Aug - 13 Aug	Ryanair
06 Aug - 08 Aug	Ryanair
11 Aug - 14 Aug	Ryanair
11 Aug - 17 Aug	Ryanair
07 Aug - 14 Aug	Ryanair
10 Aug - 15 Aug	Pegasus Airlines
10 Aug - 13 Aug	Ryanair
08 Aug - 14 Aug	Ryanair
07 Aug - 10 Aug	Ryanair

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

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 August from 394€

Return flights