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	easyJet
27 Jul - 01 Aug	TAP
27 Jul - 30 Jul	TAP
27 Jul - 31 Jul	TAP
23 Jul - 23 Jul	Condor
21 Jul - 23 Jul	Ryanair
29 Jul - 06 Aug	Ryanair
27 Jul - 03 Aug	TAP
30 Jul - 06 Aug	Ryanair
27 Jul - 07 Aug	TAP
24 Jul - 31 Jul	Ryanair
30 Jul - 05 Aug	Ryanair
30 Jul - 01 Aug	TAP
30 Jul - 31 Jul	TAP
29 Jul - 01 Aug	TAP
29 Jul - 03 Aug	TAP
29 Jul - 04 Aug	TAP
18 Jul - 20 Jul	Lufthansa	direct
23 Jul - 26 Jul	Lufthansa	direct
18 Jul - 19 Jul	Lufthansa	direct

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 $258

Return flights