AirHint found the following cheapest return flights from London (LCY) to Doha (DOH) in September 2025 (see full year).

Return flights

19 Sep - 08 Oct	Lufthansa
18 Sep - 24 Sep	KLM
22 Sep - 26 Sep	SWISS
23 Sep - 30 Sep	KLM
16 Sep - 24 Sep	KLM
29 Sep - 03 Oct	SWISS
19 Sep - 23 Sep	Lufthansa
18 Sep - 21 Sep	KLM
23 Sep - 28 Sep	KLM
20 Sep - 26 Sep	SWISS
20 Sep - 25 Sep	SWISS
19 Sep - 21 Sep	KLM
19 Sep - 09 Oct	Lufthansa
26 Sep - 05 Oct	KLM
23 Sep - 02 Oct	KLM
27 Sep - 02 Oct	SWISS
16 Sep - 08 Oct	ITA Airways
30 Sep - 07 Oct	Lufthansa
29 Sep - 06 Oct	KLM
15 Sep - 06 Oct	ITA Airways

Also check the deals for one-way flights from London to Doha 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 Doha in September from 642€

Return flights