I am currently visiting my brother in Dieppe,France. I will be returning the next few days to United States. I will have to arrange transport for myself to CDG airport. My initial plan is to take French Rail through Rouen to Paris station. Is there transport by rail to CDG Airport? A taxi is probably too expensive to CDG. I will be flying by Air France back to Houston either friday or Monday. Would it be easier to take rail to near Arche De Triompe Circle, stay at hotel and take Air France Coach nexgt morning for 10AM flight? Or should I just take an airport hoteland get shuttle to Airport?
Thank You

You will be arriving at the Gare St. Lazare. According to the Paris public transportation web page, you walk two minutes to the bus #43 which takes you to Lafayette-Magenta, which is 2 minutes from the Gare du Nord where you take the RER B to CDG.

Forget my message, it assumes same day connections.

If you decide to spend your final night in Paris, you can easily reach CDG by Metro and RER from anywhere in Paris proper in the morning in time to catch your flight to Houston. Leave your hotel around 06:00, take the Metro to a station that connects with the RER B, and take the RER B to CDG. (Be aware that the RER B divides northeast of Paris so be sure to get on a train that is going to the airport.) You'll arrive at CDG no later than 07:00, giving you the three hours recommended for a flight across the Atlantic. The fare is €8.40 and includes any transfers you might need to make. If your flight leaves from Terminal 1, get off at the CDG 1 RER station and take the free 24/7 CDGVAL driverless shuttle train to Terminal 1. If your flight leaves from Terminal 2, wait and get off at the CDG 2 TGV station.

If you'd rather stay at a budget airport hotel, I suggest these, listed according to price with the cheapest first:

Formule 1 Roissy Aeroport CDG PN 2. See here: http://tinyurl.com/5zktey.

Etap Hotel Roissy CDG Paris Nord 2. See here: http://tinyurl.com/5m3sja.

Hotel Ibis Charles de Gaulle Aéroport/Terminal. See here: http://tinyurl.com/5bkozd.

All three hotels are part of the Accor chain. The first two offer free shuttle bus service to the airport beginning at 05:30. The Hotel Ibis is located right next to Terminal 3 and within a short walk of a CDGVAL station where you can take the shuttle train to either Terminal 1 or Terminal 2.

If you want to go directly to CDG after arriving at Gare St-Lazare, walk to the Haussmann St-Lazare RER station and take the RER E to Magenta (one stop). Walk through the connecting tunnels to the Gare du Nord RER station and take the RER B to CDG. As I said above, the fare is €8.40. For a zoomable map of the Metro and RER system, go here: http://tinyurl.com/6ypurt.