Aéroport International Nantes-Atlantique, 12km southeast of town, is served by budget airline easyJet and others.
Lila (http://lila.loire-atlantique.fr) buses cover the surrounding Loire-Atlantique département. Tickets cost €2 per ride.
Eurolines has an office in town, with buses arriving and departing from the Gare Routière Baco, 800m from the southern entrance of the train station. Destinations include elsewhere in France and Europe.
The train station, with two entrances (north and south) in the city centre, is well connected to most of the country. Destinations include Bordeaux (from €30, 4¼ hours, three or four daily) and La Rochelle (from €20, 2¼ hours, three or four daily).
Tickets and information are also available at the SNCF ticket office in the city centre.