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

Return flights

14 Jul - 12 Aug	easyJet	direct
31 Jul - 26 Aug	easyJet	direct
08 Jul - 17 Jul	easyJet
31 Jul - 18 Aug	easyJet	direct
15 Jul - 17 Jul	easyJet
11 Jul - 17 Jul	easyJet
10 Jul - 24 Jul	easyJet
09 Jul - 16 Jul	easyJet
30 Jul - 12 Aug	easyJet	direct
08 Jul - 08 Jul	easyJet
17 Jul - 04 Aug	easyJet	direct
25 Jul - 27 Jul	easyJet
22 Jul - 27 Jul	easyJet
22 Jul - 29 Jul	easyJet
13 Jul - 20 Jul	easyJet
29 Jul - 03 Aug	easyJet	direct
28 Jul - 16 Aug	Ryanair
31 Jul - 04 Aug	easyJet	direct
28 Jul - 04 Aug	Ryanair
28 Jul - 15 Aug	easyJet

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 144€

Return flights