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

Return flights

30 Jul - 06 Aug	Austrian Airlines
27 Jul - 29 Jul	easyJet
29 Jul - 31 Jul	easyJet
29 Jul - 06 Aug	Lufthansa
27 Jul - 30 Jul	easyJet
27 Jul - 31 Jul	Lufthansa
31 Jul - 05 Aug	Lufthansa
27 Jul - 28 Jul	easyJet
30 Jul - 01 Aug	easyJet
30 Jul - 07 Aug	Austrian Airlines
29 Jul - 04 Aug	easyJet
29 Jul - 05 Aug	Lufthansa
28 Jul - 05 Aug	Austrian Airlines
27 Jul - 07 Aug	Lufthansa
29 Jul - 31 Jul	easyJet	direct
29 Jul - 07 Aug	easyJet
28 Jul - 31 Jul	easyJet
28 Jul - 30 Jul	Austrian Airlines
27 Jul - 30 Jul	easyJet	direct
27 Jul - 29 Jul	easyJet	direct

Also check the deals for one-way flights from Basel 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 Basel to Porto in July from 255€

Return flights