AirHint found the following cheapest return flights from Biarritz-bayonne (BIQ) to Basel (BSL) in August 2025 (see full year).

Return flights

23 Aug - 27 Aug	easyJet	direct
28 Aug - 31 Aug	KLM
06 Aug - 07 Aug	KLM
18 Aug - 25 Aug	KLM
15 Aug - 17 Aug	KLM
09 Aug - 13 Aug	Ryanair
01 Aug - 11 Aug	KLM
09 Aug - 13 Aug	easyJet	direct
24 Aug - 28 Aug	KLM

Also check the deals for one-way flights from Biarritz-bayonne to Basel 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 Biarritz-bayonne to Basel in August from 207€

Return flights