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

Return flights

23 May - 27 May	Air Europa
11 May - 13 May	Ryanair
29 May - 04 Jun	Air Europa
16 May - 23 May	Air Europa
09 May - 23 May	Air Europa
11 May - 24 May	Ryanair
10 May - 24 May	Ryanair
12 May - 17 May	Ryanair
14 May - 17 May	Air Europa
21 May - 03 Jun	Lufthansa	direct
01 May - 03 May	TAP
11 May - 13 May	Lufthansa	direct

Also check the deals for one-way flights from Frankfurt 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 Frankfurt to Porto in May from 189€

Return flights