You have a free shuttle from the airport and the « RER B » (the name is CGDVAL);
So you take the RER B direction Saint-Remy-les-Chevreuses and take off Chatelet-les-Halles;
From Chatelet-les-Halles to Saint-Lazare Station, you must take the metro, line 14;
You can buy the ticket(s) on the very day. You can also buy a combinated ticket (both RER B + Metro for about 9,25€ in the RER B station.
Take a train, from Gare Saint-Lazare to Rouen : http://www.voyages-sncf.com : between 10 and 25€ (1h15).
From Paris – Beauvais Airport:
Take a bus from Beauvais to PorteMaillot, Paris : http://www.aeroportbeauvais.com/bus.php : about 17€ (1h15);
Take the metro Porte Maillot to Saint-Lazare Station : http://www.ratp.fr : 1,80€ (30 min):
• Métro line 1: direction château de Vincennes, take off at Champs-Elysées-Clémenceau ;
• Métro line 13: direction Asnière-Genevilliers Les Courtilles, take off at Saint-Lazare.
Take a train, from Gare Saint-Lazare to Rouen: http://www.voyages-sncf.com : between 10 and 25€ (1h15).
From Orly Airport :
Take the “Orlybus” (classical bus) to go to Denfert-Rochereau (about 7€70 – 30 min);
Take the metro line 6 : from Denfert-Rochereau (direction Charles de Gaulle-Etoile) to Montparnasse-Bienvenue;
Take the metro line 13 : from Montparnasse-Bienvenue (direction Asnières-Gennevilliers Les Courtilles) to Gare Saint-Lazare (about 1€80 – 23 min);
Take a train, from Gare Saint-Lazare to Rouen: http://www.voyages-sncf.com : between 10 and 25€ (1h15).
Taxis :
Airport Direct line : Mohamed ZEGHOUDI : 00 33 (0)2 35 48 22 23 – contact@airportdirectlines.fr