AirHint found the following cheapest return flights from Porto (OPO) to Singapore (SIN) in August 2026 (see full year).

Return flights

02 Aug - 14 Aug	Wizz Air Malta
16 Aug - 02 Sep	TAP
03 Aug - 14 Aug	Ryanair
16 Aug - 31 Aug	TAP
12 Aug - 31 Aug	TAP
13 Aug - 27 Aug	Ryanair
01 Aug - 13 Aug	Wizz Air Malta
13 Aug - 31 Aug	TAP
01 Aug - 12 Aug	Wizz Air Malta
01 Aug - 14 Aug	Wizz Air Malta
01 Aug - 07 Aug	Wizz Air Malta

Also check the deals for one-way flights from Porto to Singapore 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 Singapore in August from $952

Return flights