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

Return flights

30 Jul - 07 Aug	Ryanair
30 Jul - 06 Aug	Ryanair
31 Jul - 07 Aug	Ryanair
07 Jul - 10 Jul	Ryanair
07 Jul - 11 Jul	Ryanair
08 Jul - 15 Jul	Ryanair
30 Jul - 02 Aug	Ryanair
08 Jul - 13 Jul	Ryanair
10 Jul - 14 Jul	Ryanair
20 Jul - 27 Jul	Ryanair
20 Jul - 24 Jul	Ryanair
09 Jul - 12 Jul	Ryanair
23 Jul - 29 Jul	Norwegian Air Sweden AOC
05 Jul - 09 Jul	Ryanair
23 Jul - 06 Aug	Norwegian Air Sweden AOC
24 Jul - 07 Aug	Ryanair
26 Jul - 02 Aug	Norwegian Air Sweden AOC
28 Jul - 03 Aug	Ryanair
30 Jul - 02 Aug	airBaltic	direct
30 Jul - 06 Aug	airBaltic	direct

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

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 Porto in July from 250€

Return flights