AirHint found the following cheapest return flights from Porto (OPO) to Shanghai (SHA) in September 2025 (see full year).

Return flights

30 Sep - 08 Oct	Ryanair
29 Sep - 14 Oct	SWISS
17 Sep - 05 Oct	SWISS
25 Sep - 08 Oct	SWISS
17 Sep - 24 Sep	Ryanair
11 Sep - 17 Sep	SWISS
12 Sep - 19 Sep	Lufthansa
21 Sep - 28 Sep	Austrian Airlines
13 Sep - 20 Sep	Austrian Airlines
16 Sep - 25 Sep	Vueling Airlines
03 Sep - 05 Sep	Ryanair
12 Sep - 20 Sep	SWISS
08 Sep - 25 Sep	British Airways
06 Sep - 10 Sep	Norwegian Air Sweden AOC
09 Sep - 01 Oct	Ryanair
29 Sep - 02 Oct	Emirates

Also check the deals for one-way flights from Porto to Shanghai in September.

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 Shanghai in September from 596€

Return flights