AirHint found the following cheapest return flights from Split (SPU) to Riga (RIX) in September 2025 (see full year).

Return flights

05 Sep - 08 Sep	Lufthansa
06 Sep - 22 Sep	Norwegian Air Sweden AOC
16 Sep - 29 Sep	Norwegian
16 Sep - 22 Sep	Norwegian
16 Sep - 06 Oct	Norwegian
06 Sep - 08 Sep	Norwegian Air Sweden AOC
05 Sep - 08 Sep	airBaltic	direct
06 Sep - 15 Sep	Norwegian Air Sweden AOC
21 Sep - 29 Sep	Norwegian
21 Sep - 22 Sep	Norwegian
21 Sep - 06 Oct	Norwegian

Also check the deals for one-way flights from Split to Riga in September.

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 Split to Riga in September from 227€

Return flights