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

Return flights

21 Sep - 23 Oct	China Southern
23 Sep - 23 Oct	Air China
24 Sep - 20 Oct	Shenzhen Airlines
22 Sep - 24 Oct	Air China
24 Sep - 14 Oct	China Southern
27 Sep - 15 Oct	Shenzhen Airlines
23 Sep - 30 Sep	China Eastern
24 Sep - 01 Oct	China Eastern
22 Sep - 05 Oct	Shenzhen Airlines
21 Sep - 06 Oct	Shenzhen Airlines
22 Sep - 08 Oct	Shenzhen Airlines
24 Sep - 29 Sep	Shenzhen Airlines
24 Sep - 30 Sep	Air China
22 Sep - 28 Sep	Shenzhen Airlines
21 Sep - 26 Sep	Shenzhen Airlines
24 Sep - 28 Sep	Air China
22 Sep - 27 Sep	Air China
23 Sep - 25 Sep	China Eastern
26 Sep - 28 Sep	KLM
22 Sep - 26 Sep	Air Canada

Also check the deals for one-way flights from London to Osaka 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 Osaka in September from $741

Return flights