AirHint found the following cheapest return flights from London (LHR) to Krakow (KRK) in September 2025 (see full year).

Return flights

03 Sep - 07 Sep	British Airways
10 Sep - 15 Sep	British Airways
21 Sep - 30 Sep	KLM
27 Sep - 30 Sep	KLM
28 Sep - 11 Oct	KLM
28 Sep - 02 Oct	KLM
27 Sep - 01 Oct	KLM
08 Sep - 12 Sep	KLM
10 Sep - 18 Sep	Lufthansa
23 Sep - 27 Sep	KLM
06 Sep - 11 Sep	KLM
23 Sep - 30 Sep	KLM
05 Sep - 11 Sep	KLM
29 Sep - 02 Oct	KLM
26 Sep - 04 Oct	KLM
29 Sep - 03 Oct	Lufthansa
29 Sep - 01 Oct	Scandinavian Airlines
28 Sep - 03 Oct	Brussels Airlines
25 Sep - 04 Oct	Austrian Airlines
27 Sep - 04 Oct	Austrian Airlines

Also check the deals for one-way flights from London to Krakow 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 Krakow in September from 165€

Return flights