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

Return flights

29 Sep - 03 Oct	Norwegian Air Sweden AOC
17 Sep - 24 Sep	Ryanair
26 Sep - 03 Oct	Norwegian Air Sweden AOC
28 Sep - 03 Oct	airBaltic
27 Sep - 12 Oct	airBaltic
29 Sep - 02 Oct	Ryanair
16 Sep - 23 Sep	Ryanair
11 Sep - 15 Sep	Ryanair
12 Sep - 19 Sep	Ryanair
11 Sep - 18 Sep	Ryanair
13 Sep - 16 Sep	Ryanair
12 Sep - 15 Sep	Ryanair
12 Sep - 16 Sep	Ryanair
15 Sep - 22 Sep	Ryanair
14 Sep - 14 Sep	Ryanair

Also check the deals for one-way flights from Riga to Belgrade 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 Riga to Belgrade in September from 189€

Return flights