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

Return flights

23 Sep - 05 Oct	Ryanair
23 Sep - 04 Oct	Ryanair
20 Sep - 23 Sep	Ryanair
09 Sep - 13 Sep	Ryanair
15 Sep - 21 Sep	Ryanair
28 Sep - 04 Oct	Ryanair
24 Sep - 26 Sep	Ryanair
09 Sep - 28 Sep	Ryanair
23 Sep - 28 Sep	Ryanair
25 Sep - 26 Sep	Ryanair
18 Sep - 21 Sep	Ryanair
11 Sep - 13 Sep	Ryanair
25 Sep - 28 Sep	Ryanair

Also check the deals for one-way flights from Rome 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 Rome to Riga in September from $183

Return flights