French Railways (SNCF) operates a train from Rennes to Nantes Airport (NTE) every 20 minutes. Tickets cost $33 and the journey takes 1 h 17 min. TAN Nantes Transit also services this route every 15 minutes.
How to get from Rennes to Nantes Airport (NTE)
From Rennes train to Gare SNCF Sud then bus to Nantes-Atlantique. 1 h 42 min 27€. From Rennes drive to Nantes Airport (NTE). 1 h 15 min 15€.