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

Return flights

13 Aug - 13 Sep	Norwegian
29 Aug - 05 Sep	SWISS
22 Aug - 29 Aug	Ryanair
30 Aug - 19 Sep	Wizz Air
06 Aug - 13 Aug	Norwegian	direct
02 Aug - 13 Aug	Norwegian
09 Aug - 13 Aug	Norwegian
02 Aug - 13 Aug	Norwegian	direct
09 Aug - 13 Aug	Norwegian	direct
02 Aug - 09 Aug	Norwegian
09 Aug - 16 Aug	Norwegian
02 Aug - 09 Aug	Norwegian	direct
09 Aug - 16 Aug	Norwegian	direct

Also check the deals for one-way flights from Oslo to Thessaloniki 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 Oslo to Thessaloniki in August from $142

Return flights