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

Return flights

28 Aug - 16 Sep	IndiGo
24 Aug - 08 Sep	Finnair
27 Aug - 28 Aug	IndiGo
14 Aug - 21 Aug	IndiGo
11 Aug - 19 Aug	IndiGo
11 Aug - 14 Aug	IndiGo
01 Aug - 10 Aug	Finnair
11 Aug - 27 Aug	Scandinavian Airlines

Also check the deals for one-way flights from Oslo to Singapore 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 Singapore in August from $588

Return flights