AirHint found the following cheapest return flights from Lisbon (LIS) to Osaka (KIX) in August 2025 (see full year).

Return flights

24 Aug - 10 Sep	easyJet
28 Aug - 10 Sep	Vueling Airlines
27 Aug - 06 Sep	Wizz Air
29 Aug - 06 Sep	Iberia
31 Aug - 14 Sep	easyJet
22 Aug - 26 Aug	TAP
30 Aug - 02 Sep	Ryanair
12 Aug - 26 Aug	Finnair
09 Aug - 15 Aug	Ryanair
10 Aug - 15 Aug	TAP
12 Aug - 19 Aug	Ryanair
10 Aug - 19 Aug	TAP
10 Aug - 20 Aug	TAP
09 Aug - 27 Aug	TAP
01 Aug - 31 Aug	Ryanair
10 Aug - 18 Aug	TAP
19 Aug - 09 Sep	Qatar Airways
19 Aug - 08 Sep	Qatar Airways

Also check the deals for one-way flights from Lisbon to Osaka 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 Lisbon to Osaka in August from $971

Return flights