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

Return flights

19 Aug - 25 Aug	Etihad Airways
03 Aug - 08 Aug	Etihad Airways
14 Aug - 22 Aug	SWISS
10 Aug - 20 Aug	Etihad Airways
10 Aug - 13 Aug	Etihad Airways
12 Aug - 16 Aug	KLM
10 Aug - 16 Aug	Etihad Airways
06 Aug - 15 Aug	KLM
09 Aug - 15 Aug	KLM

Also check the deals for one-way flights from Tokyo to Porto 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 Tokyo to Porto in August from $1726

Return flights