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

Return flights

09 Sep - 13 Sep	Vueling Airlines	direct
02 Sep - 13 Sep	Vueling Airlines	direct
02 Sep - 09 Sep	Vueling Airlines	direct
09 Sep - 17 Sep	Vueling Airlines
06 Sep - 13 Sep	Wizz Air Malta
09 Sep - 16 Sep	Vueling Airlines
06 Sep - 09 Sep	Wizz Air Malta
02 Sep - 20 Sep	Vueling Airlines	direct
09 Sep - 15 Sep	Vueling Airlines
07 Sep - 21 Sep	Wizz Air Malta
20 Sep - 11 Oct	Vueling Airlines	direct
27 Sep - 18 Oct	Vueling Airlines	direct

Also check the deals for one-way flights from Billund to Barcelona in September.

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 Billund to Barcelona in September from 93€

Return flights