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

Return flights

17 Sep - 23 Sep	Ryanair
09 Sep - 16 Sep	Air France
20 Sep - 23 Sep	Air France
06 Sep - 16 Sep	Air France
02 Sep - 09 Sep	Aegean Airlines
30 Sep - 09 Oct	airBaltic
30 Sep - 07 Oct	airBaltic
25 Sep - 30 Sep	airBaltic
30 Sep - 04 Oct	airBaltic
02 Sep - 11 Sep	Aegean Airlines
16 Sep - 23 Sep	Norwegian Air Sweden AOC
30 Sep - 03 Oct	airBaltic
02 Sep - 09 Sep	Aegean Airlines	direct
12 Sep - 15 Sep	Ryanair
25 Sep - 02 Oct	airBaltic
27 Sep - 02 Oct	Ryanair
25 Sep - 01 Oct	LOT
27 Sep - 06 Oct	Aegean Airlines
20 Sep - 02 Oct	Turkish Airlines
26 Sep - 01 Oct	Turkish Airlines

Also check the deals for one-way flights from Riga to Athens 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 Athens in September from $226

Return flights