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

Return flights

25 Sep - 02 Oct	Air France
11 Sep - 17 Sep	Air France
22 Sep - 06 Oct	Lufthansa
29 Sep - 06 Oct	Lufthansa
17 Sep - 26 Sep	Lufthansa
17 Sep - 30 Sep	Lufthansa
26 Sep - 29 Sep	British Airways
17 Sep - 03 Oct	KLM
11 Sep - 26 Sep	Air France
27 Sep - 03 Oct	LOT
04 Sep - 06 Sep	Lufthansa
05 Sep - 09 Sep	Lufthansa
02 Sep - 04 Sep	Eurowings
08 Sep - 12 Sep	Lufthansa
05 Sep - 12 Sep	Air France

Also check the deals for one-way flights from Stuttgart 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 Stuttgart to Riga in September from 204€

Return flights