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

Return flights

22 Jul - 23 Jul	Ryanair
15 Jul - 19 Jul	Ryanair
19 Jul - 23 Jul	Ryanair
15 Jul - 26 Jul	Ryanair
19 Jul - 26 Jul	Ryanair
16 Jul - 26 Jul	Ryanair
16 Jul - 19 Jul	Ryanair
19 Jul - 22 Jul	Ryanair
15 Jul - 05 Aug	Ryanair
15 Jul - 29 Jul	Ryanair
26 Jul - 05 Aug	Ryanair
26 Jul - 30 Jul	Ryanair
15 Jul - 12 Aug	Ryanair
29 Jul - 06 Aug	Ryanair
29 Jul - 07 Aug	Ryanair
26 Jul - 06 Aug	Ryanair
22 Jul - 12 Aug	Ryanair
29 Jul - 12 Aug	Ryanair
23 Jul - 06 Aug	Ryanair
30 Jul - 07 Aug	Ryanair

Also check the deals for one-way flights from Frankfurt 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 Frankfurt to Porto in July from 149€

Return flights