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

Return flights

30 Aug - 03 Sep	Norwegian Air Sweden AOC
25 Aug - 01 Sep	TAP
13 Aug - 21 Aug	Eurowings
29 Aug - 01 Sep	Ryanair
21 Aug - 25 Aug	Ryanair
12 Aug - 20 Aug	Ryanair
22 Aug - 25 Aug	Ryanair
25 Aug - 28 Aug	TAP
07 Aug - 11 Aug	Ryanair
25 Aug - 29 Aug	Ryanair
11 Aug - 15 Aug	Ryanair
08 Aug - 11 Aug	Ryanair
01 Aug - 09 Aug	Ryanair

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 230€

Return flights