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

Return flights

31 Jul - 26 Aug	easyJet	direct
08 Jul - 17 Jul	easyJet
15 Jul - 17 Jul	easyJet
31 Jul - 18 Aug	easyJet	direct
10 Jul - 23 Jul	easyJet
08 Jul - 10 Jul	easyJet
11 Jul - 24 Jul	easyJet
15 Jul - 20 Jul	easyJet
17 Jul - 22 Jul	easyJet
08 Jul - 09 Jul	easyJet
09 Jul - 10 Jul	easyJet
22 Jul - 28 Jul	easyJet
30 Jul - 07 Aug	easyJet	direct
31 Jul - 03 Aug	easyJet	direct

Also check the deals for one-way flights from Porto to Basel 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 Porto to Basel in July from 147€

Return flights