AirHint found the following cheapest return flights from Madrid (MAD) to Oslo (OSL) in August 2025 (see full year).

Return flights

29 Aug - 31 Aug	Iberia
28 Aug - 31 Aug	Norwegian
28 Aug - 30 Aug	Norwegian
29 Aug - 06 Sep	Norwegian
29 Aug - 07 Sep	Norwegian
28 Aug - 07 Sep	Norwegian
24 Aug - 31 Aug	Iberia
29 Aug - 05 Sep	Norwegian
24 Aug - 30 Aug	Iberia
29 Aug - 02 Sep	Iberia
26 Aug - 28 Aug	Ryanair
05 Aug - 14 Aug	Ryanair
24 Aug - 28 Aug	Iberia
23 Aug - 27 Aug	Ryanair
30 Aug - 03 Sep	Ryanair
24 Aug - 26 Aug	Iberia
26 Aug - 01 Sep	Iberia
30 Aug - 06 Sep	Iberia Express
29 Aug - 07 Sep	Norwegian	direct
29 Aug - 05 Sep	Norwegian	direct

Also check the deals for one-way flights from Madrid 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 Madrid to Oslo in August from $156

Return flights