AirHint found the following cheapest return flights from Bilbao (BIO) to Duesseldorf (DUS) in September 2026 (see full year).

Return flights

11 Sep - 15 Sep	easyJet
02 Sep - 07 Sep	easyJet
15 Sep - 16 Sep	Vueling Airlines
16 Sep - 16 Sep	Vueling Airlines
28 Sep - 30 Sep	easyJet
15 Sep - 18 Sep	Vueling Airlines
11 Sep - 16 Sep	Vueling Airlines
13 Sep - 15 Sep	Vueling Airlines
13 Sep - 16 Sep	Vueling Airlines
16 Sep - 18 Sep	Vueling Airlines
28 Sep - 01 Oct	easyJet
30 Sep - 01 Oct	easyJet
29 Sep - 01 Oct	easyJet
20 Sep - 07 Oct	Vueling Airlines
15 Sep - 02 Oct	Vueling Airlines
15 Sep - 03 Oct	Vueling Airlines
28 Sep - 07 Oct	Vueling Airlines
30 Sep - 07 Oct	Vueling Airlines
29 Sep - 07 Oct	Vueling Airlines
16 Sep - 02 Oct	Vueling Airlines

Also check the deals for one-way flights from Bilbao to Duesseldorf 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 Bilbao to Duesseldorf in September from $168

Return flights