Cheapest one-way flights from Porto to Riga in September from 78€

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

One-Way flights

06 Sep Norwegian Air Sweden AOC
30 Sep Ryanair
03 Sep Norwegian Air Sweden AOC
26 Sep Ryanair
10 Sep Norwegian
17 Sep Ryanair
18 Sep Ryanair
13 Sep Norwegian Air Sweden AOC
16 Sep Ryanair
12 Sep Ryanair

Also check the deals for return flights from Porto to Riga 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.

Book a cheap hotel in Riga

Cheap car rent in Riga

Feel free to contact us with any feedback or request another flight research.