AirHint found the following cheapest return flights from Bilbao (BIO) to Copenhagen (CPH) in August 2025 (see full year).

Return flights

28 Aug - 02 Sep	Iberia
29 Aug - 02 Sep	Iberia
22 Aug - 29 Sep	Iberia
23 Aug - 02 Sep	Air Europa
28 Aug - 01 Sep	Iberia
30 Aug - 16 Sep	Norwegian
27 Aug - 16 Sep	Norwegian
28 Aug - 04 Sep	Iberia
28 Aug - 05 Sep	Iberia
30 Aug - 07 Sep	Norwegian
26 Aug - 30 Aug	SWISS
20 Aug - 27 Aug	KLM
28 Aug - 31 Aug	Iberia
20 Aug - 26 Aug	KLM
22 Aug - 26 Aug	KLM
20 Aug - 25 Aug	KLM
27 Aug - 30 Aug	Lufthansa
21 Aug - 25 Aug	KLM
27 Aug - 31 Aug	Norwegian
26 Aug - 31 Aug	Vueling Airlines

Also check the deals for one-way flights from Bilbao to Copenhagen in August.

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 Copenhagen in August from 166€

Return flights