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

Return flights

06 Mar - 09 Mar	Ryanair	direct
06 Mar - 23 Mar	Ryanair	direct
20 Mar - 23 Mar	Ryanair	direct
07 Mar - 14 Mar	Lufthansa	direct
18 Mar - 25 Mar	Lufthansa	direct
21 Mar - 24 Mar	Ryanair
21 Mar - 29 Mar	Lufthansa	direct
26 Mar - 29 Mar	Lufthansa	direct
25 Mar - 11 Apr	Iberia
28 Mar - 05 Apr	Ryanair
25 Mar - 11 Apr	Lufthansa	direct
27 Mar - 12 Apr	SWISS
28 Mar - 05 Apr	Lufthansa	direct
27 Mar - 12 Apr	Ryanair	direct

Also check the deals for one-way flights from Frankfurt to Porto in March.

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 March from $136

Return flights