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

Return flights

20 Sep - 20 Oct	China Eastern
23 Sep - 22 Oct	China Eastern
21 Sep - 22 Oct	China Eastern
20 Sep - 22 Oct	Air China
18 Sep - 16 Oct	Air China
24 Sep - 20 Oct	China Eastern
16 Sep - 02 Oct	Air China
18 Sep - 01 Oct	Air China
03 Sep - 01 Oct	Air China
16 Sep - 01 Oct	Air China
03 Sep - 07 Sep	Air China
02 Sep - 08 Sep	Air China
03 Sep - 09 Sep	Air China
21 Sep - 30 Sep	China Southern
08 Sep - 29 Sep	Air China
14 Sep - 29 Sep	Air China
15 Sep - 30 Sep	China Southern
07 Sep - 16 Sep	Air China
21 Sep - 28 Sep	Air China
16 Sep - 23 Sep	Air China

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 542€

Return flights