AirHint found the following cheapest return flights from London (LON) to Karachi (KHI) in May 2026 (see full year).

Return flights

06 May - 13 May	Wizz Air UK
01 May - 14 May	Wizz Air UK
04 May - 10 May	Wizz Air UK
08 May - 18 May	Wizz Air UK
01 May - 15 May	Wizz Air UK
04 May - 21 May	Wizz Air UK
05 May - 21 May	Ryanair
05 May - 12 May	Ryanair
11 May - 19 May	Wizz Air
18 May - 12 Jun	Ryanair
07 May - 14 May	Wizz Air UK
27 May - 18 Jun	Ryanair
10 May - 10 Jun	Pegasus Airlines
11 May - 16 Jun	Pegasus Airlines
11 May - 23 Jun	Pegasus Airlines
21 May - 21 Jun	Pegasus Airlines
21 May - 15 Jun	Pegasus Airlines
15 May - 08 Jun	Wizz Air
19 May - 09 Jun	Ryanair
21 May - 16 Jun	Pegasus Airlines

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

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 May from $463

Return flights