Tbm operates a train from Bordeaux Airport (BOD) to Dax hourly. Tickets cost $1 - $2 and the journey takes 16 min. 2 other operators also service this route. Alternatively, Tbm operates a bus from Bordeaux Airport (BOD) to Dax every 15 minutes. Tickets cost $1 - $3 and the journey takes 54 min. Eurolines FR also services this route once daily.
From Aéroport Terminus line 48 bus to France Alouette, line 4 bus to Pessac(Bordeaux), then train to Dax. 2 h 46 min 27€. From Aéroport Terminus line 1 bus to Bordeaux then bus to Dax. 3 h 38 min 48€. From Bordeaux Airport (BOD) drive to Dax. 1 h 29 min 20€.