Cheapest return flights from Billund to Porto in September from $253

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

Return flights

29 Sep - 07 Oct Wizz Air Malta
24 Sep - 02 Oct Wizz Air Malta
28 Sep - 07 Oct Scandinavian Airlines
24 Sep - 01 Oct Wizz Air Malta
08 Sep - 12 Sep Norwegian
10 Sep - 14 Sep Wizz Air Malta
12 Sep - 15 Sep Norwegian

Also check the deals for one-way flights from Billund 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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