Cheapest return flights from Basel to Porto in September from $66

Best time to book flights for Basel (BSL) to Porto (OPO) flights at AirHint

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

Return flights

15 Sep - 18 Sep easyJet direct
22 Sep - 30 Sep easyJet direct
20 Sep - 23 Sep easyJet direct
01 Sep - 05 Sep easyJet direct
16 Sep - 20 Sep easyJet direct
29 Sep - 02 Oct easyJet direct
25 Sep - 28 Sep easyJet direct
15 Sep - 22 Sep easyJet direct
29 Sep - 03 Oct easyJet direct
27 Sep - 02 Oct easyJet direct
02 Sep - 04 Sep easyJet direct
28 Sep - 03 Oct easyJet direct
30 Sep - 10 Oct easyJet direct
01 Sep - 06 Sep easyJet direct
05 Sep - 08 Sep easyJet direct
27 Sep - 11 Oct easyJet direct

Also check the deals for one-way flights from Basel to Porto in September.

Skyscanner

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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