For ground transportation we recommend (no matter with which company you're flying)


From Charles De Gaulle Airport

CDG is Paris' main international airport, situated 19.5 miles (31 km) from the city center. It may take about an hour to go to downtown Paris by taxi. Taxis are licensed and must use their taximeters. Fast and reliable airbus services carry passengers from the airport to downtown Paris.
RER (suburban railway) runs to the Gare Du Nord railway station and has a connection to the subway there.

From Orly Airport

Orly Airport is 14,5 miles (23 km) from Paris center.
Taxis take about 40 minutes from Orly airport to central Paris. Airbuses are also available and run frequently to different districts of the city.
RER connect to the Gare d’Austerlitz railway station and the Metro (subway).

Please visit Aéroport de Paris  RATP(bus,subway,RER)