AirHint found the following cheapest return flights from Porto (OPO) to Riga (RIX) in April 2026 (see full year).

Return flights

15 Apr - 19 Apr	Ryanair
15 Apr - 22 Apr	Ryanair
04 Apr - 11 Apr	Norwegian Air Sweden AOC
29 Apr - 06 May	Ryanair
25 Apr - 02 May	Ryanair
01 Apr - 08 Apr	airBaltic
08 Apr - 11 Apr	Ryanair
01 Apr - 06 Apr	airBaltic
01 Apr - 06 Apr	airBaltic	direct
05 Apr - 11 Apr	Ryanair
28 Apr - 03 May	easyJet
07 Apr - 10 Apr	Ryanair
04 Apr - 11 Apr	airBaltic	direct
30 Apr - 03 May	Ryanair
29 Apr - 06 May	airBaltic	direct
25 Apr - 02 May	airBaltic	direct

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

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 April from 143€

Return flights