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

One-Way flights

22 Sep	Norwegian Air Sweden AOC
28 Sep	Norwegian Air Sweden AOC
26 Sep	Norwegian Air Sweden AOC
21 Sep	Norwegian Air Sweden AOC
17 Sep	Norwegian Air Sweden AOC
15 Sep	Norwegian Air Sweden AOC
19 Sep	Ryanair
16 Sep	Norwegian Air Sweden AOC
25 Sep	Norwegian Air Sweden AOC
18 Sep	Ryanair

Also check the deals for return flights from Riga to Split 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 one-way flights from Riga to Split in September from 59€

One-Way flights