AirHint found the following cheapest return flights from Warsaw (WMI) to Porto (OPO) in May 2026 (see full year).

Return flights

06 May - 13 May	Ryanair	direct
03 May - 13 May	Ryanair	direct
08 May - 13 May	Ryanair
09 May - 13 May	Ryanair
13 May - 20 May	Ryanair	direct
06 May - 20 May	Ryanair	direct
03 May - 06 May	Ryanair	direct
03 May - 20 May	Ryanair	direct
06 May - 10 May	Ryanair	direct
13 May - 03 Jun	Ryanair	direct
15 May - 19 May	Ryanair
30 May - 03 Jun	Ryanair
27 May - 03 Jun	Ryanair
31 May - 04 Jun	Ryanair
20 May - 03 Jun	Ryanair	direct
25 May - 14 Jun	Ryanair
31 May - 14 Jun	Ryanair	direct
31 May - 03 Jun	Ryanair	direct
31 May - 08 Jun	Ryanair
29 May - 14 Jun	Ryanair

Also check the deals for one-way flights from Warsaw to Porto in May.

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 Warsaw to Porto in May from 156€

Return flights