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

Return flights

05 Aug - 09 Aug	TAP
03 Aug - 07 Aug	easyJet
07 Aug - 21 Aug	Ryanair
07 Aug - 12 Aug	Ryanair
07 Aug - 14 Aug	Ryanair
07 Aug - 13 Aug	Ryanair
01 Aug - 05 Aug	Ryanair
06 Aug - 13 Aug	LOT
21 Aug - 28 Aug	Norwegian
19 Aug - 21 Aug	Norwegian	direct
21 Aug - 09 Sep	Norwegian
21 Aug - 11 Sep	Norwegian	direct
21 Aug - 09 Sep	Norwegian	direct
19 Aug - 09 Sep	Norwegian	direct

Also check the deals for one-way flights from Porto to Oslo 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 Oslo in August from 197€

Return flights