Cheapest return flights from Riga to Porto in September from $194

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

Return flights

23 Sep - 27 Sep Ryanair
20 Sep - 03 Oct Ryanair
20 Sep - 27 Sep Ryanair
27 Sep - 07 Oct airBaltic
23 Sep - 07 Oct Ryanair
27 Sep - 08 Oct Ryanair
25 Sep - 07 Oct Ryanair
27 Sep - 27 Sep Ryanair
09 Sep - 16 Sep Ryanair
27 Sep - 10 Oct Ryanair
30 Sep - 14 Oct Ryanair
20 Sep - 24 Sep Ryanair
15 Sep - 18 Sep Ryanair
07 Sep - 15 Sep Ryanair
27 Sep - 09 Oct Ryanair
27 Sep - 04 Oct Norwegian Air Sweden AOC
21 Sep - 01 Oct Ryanair
08 Sep - 15 Sep Ryanair
09 Sep - 14 Sep Ryanair
16 Sep - 20 Sep Ryanair

Also check the deals for one-way flights from Riga to Porto in September.

Skyscanner

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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