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

Return flights

25 Aug - 22 Sep	Ryanair
30 Aug - 04 Sep	Ryanair
26 Aug - 31 Aug	Vueling Airlines
29 Aug - 01 Sep	Ryanair
27 Aug - 30 Aug	Wizz Air Malta
25 Aug - 28 Aug	Ryanair
26 Aug - 29 Aug	Vueling Airlines
11 Aug - 16 Aug	Ryanair
05 Aug - 04 Sep	Ryanair
11 Aug - 15 Aug	Ryanair
26 Aug - 28 Aug	Vueling Airlines
07 Aug - 13 Aug	TAP
07 Aug - 12 Aug	TAP
12 Aug - 15 Aug	Vueling Airlines

Also check the deals for one-way flights from Porto to Bucharest 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 Bucharest in August from 213€

Return flights