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

Return flights

30 Jul - 30 Jul	Ryanair
20 Jul - 27 Jul	Ryanair
22 Jul - 30 Jul	Ryanair
09 Jul - 16 Jul	Ryanair
23 Jul - 06 Aug	Ryanair
16 Jul - 30 Jul	Ryanair
20 Jul - 30 Jul	Ryanair
23 Jul - 07 Aug	Ryanair
22 Jul - 07 Aug	Vueling Airlines
23 Jul - 30 Jul	Ryanair
21 Jul - 30 Jul	Ryanair
23 Jul - 31 Jul	Ryanair
23 Jul - 27 Jul	Ryanair
30 Jul - 02 Aug	Ryanair
23 Jul - 02 Aug	Ryanair
23 Jul - 01 Aug	Ryanair
28 Jul - 01 Aug	Wizz Air Malta
23 Jul - 06 Aug	airBaltic	direct
23 Jul - 02 Aug	TAP	direct
30 Jul - 02 Aug	airBaltic	direct

Also check the deals for one-way flights from Porto to Riga 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 Porto to Riga in July from 229€

Return flights