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

Return flights

18 Aug - 23 Sep	Finnair
18 Aug - 28 Sep	Finnair
18 Aug - 30 Sep	Finnair
20 Aug - 24 Sep	Finnair
19 Aug - 25 Sep	Finnair
18 Aug - 24 Sep	Finnair
19 Aug - 24 Sep	Finnair
14 Aug - 24 Sep	Finnair
18 Aug - 27 Sep	Finnair
14 Aug - 29 Sep	Finnair
20 Aug - 27 Aug	airBaltic
27 Aug - 31 Aug	Finnair
11 Aug - 18 Aug	airBaltic
11 Aug - 16 Aug	airBaltic

Also check the deals for one-way flights from Riga 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 Riga to Singapore in August from 581€

Return flights