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

Return flights

01 Aug - 31 Aug	Japan Airlines
11 Aug - 25 Aug	Japan Airlines
13 Aug - 26 Aug	Japan Airlines
06 Aug - 07 Sep	Japan Airlines
14 Aug - 19 Aug	Lufthansa
14 Aug - 24 Aug	Japan Airlines
12 Aug - 26 Aug	Japan Airlines
18 Aug - 07 Sep	British Airways
14 Aug - 25 Aug	Japan Airlines
13 Aug - 25 Aug	Japan Airlines
12 Aug - 25 Aug	Japan Airlines
12 Aug - 27 Aug	Japan Airlines
20 Aug - 07 Sep	Japan Airlines
28 Aug - 03 Sep	British Airways
15 Aug - 09 Sep	British Airways
29 Aug - 01 Sep	Lufthansa
31 Aug - 07 Sep	British Airways
17 Aug - 07 Sep	Japan Airlines
28 Aug - 10 Sep	British Airways
29 Aug - 03 Sep	Lufthansa

Also check the deals for one-way flights from Osaka to London in August.

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 Osaka to London in August from 1338€

Return flights