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

Return flights

06 Dec - 20 Dec	Air Europa
02 Dec - 16 Dec	Qatar Airways
11 Dec - 13 Jan	KLM
07 Dec - 14 Dec	Qatar Airways
01 Dec - 15 Dec	KLM
05 Dec - 08 Dec	SWISS
01 Dec - 11 Dec	KLM
01 Dec - 22 Dec	KLM
01 Dec - 14 Dec	KLM
05 Dec - 14 Dec	KLM
10 Dec - 22 Dec	KLM
27 Dec - 13 Jan	Brussels Airlines
14 Dec - 05 Jan	Iberia
26 Dec - 10 Jan	Qatar Airways
13 Dec - 04 Jan	Iberia
27 Dec - 10 Jan	KLM
13 Dec - 03 Jan	Qatar Airways
20 Dec - 02 Jan	Iberia
19 Dec - 02 Jan	Turkish Airlines
21 Dec - 02 Jan	Iberia

Also check the deals for one-way flights from Porto to Tokyo in December.

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 December from $951

Return flights