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

Return flights

11 Aug - 24 Aug	Norwegian
11 Aug - 21 Aug	Norwegian
15 Aug - 21 Aug	Norwegian
01 Aug - 21 Aug	Norwegian
04 Aug - 21 Aug	Norwegian
08 Aug - 21 Aug	Norwegian
08 Aug - 11 Aug	Norwegian
11 Aug - 15 Aug	Norwegian	direct
04 Aug - 15 Aug	Norwegian	direct
08 Aug - 11 Aug	Norwegian	direct
18 Aug - 08 Sep	Norwegian

Also check the deals for one-way flights from Trondheim to Riga 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 Trondheim to Riga in August from $167

Return flights