AirHint found the following cheapest return flights from Porto (OPO) to Tokyo (HND) in August 2025 (see full year).

Return flights

27 Aug - 10 Sep	easyJet
19 Aug - 25 Aug	easyJet
21 Aug - 28 Aug	easyJet
02 Aug - 17 Aug	Turkish Airlines
02 Aug - 14 Aug	Ryanair
04 Aug - 11 Aug	easyJet
18 Aug - 28 Aug	Ryanair
26 Aug - 11 Sep	Air France
27 Aug - 13 Sep	Air France
01 Aug - 07 Aug	Ryanair
26 Aug - 13 Sep	Air France
27 Aug - 14 Sep	British Airways
11 Aug - 29 Aug	easyJet
24 Aug - 03 Sep	Air France
26 Aug - 07 Sep	Lufthansa
31 Aug - 27 Sep	Lufthansa
25 Aug - 05 Sep	Air France
24 Aug - 05 Sep	Air France
18 Aug - 22 Aug	Ryanair
18 Aug - 24 Aug	British Airways

Also check the deals for one-way flights from Porto to Tokyo 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 Porto to Tokyo in August from 978€

Return flights