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

Return flights

01 Sep - 06 Sep	Aegean Airlines	direct
08 Sep - 13 Sep	Aegean Airlines	direct
11 Sep - 14 Sep	Ryanair
02 Sep - 09 Sep	Ryanair
11 Sep - 16 Sep	Ryanair
26 Sep - 29 Sep	Aegean Airlines
01 Sep - 08 Sep	Aegean Airlines
02 Sep - 06 Sep	Ryanair
13 Sep - 16 Sep	Ryanair
05 Sep - 09 Sep	Aegean Airlines
26 Sep - 02 Oct	Aegean Airlines
28 Sep - 04 Oct	Ryanair
26 Sep - 02 Oct	Aegean Airlines	direct

Also check the deals for one-way flights from Athens 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 Athens to Riga in September from $217

Return flights