Go to a taxi stand at CDG or central Paris or ask your hotel to book a taxi for you. Book the taxi several hours in advance. Allow 40 minutes to two hours for the trip, depending on traffic. Meters begin at the time the taxi is called. Plan to pay 30 to 60 euros, plus a 10 percent tip, 1 euro per bag and surcharges for evenings, Sundays and holidays. Credit cards not accepted--euros only.
Reserve an airport shuttle service online, at least 48 hours in advance. Shared and private transfers provide door-to-door minivan service, often with English-speaking drivers. As of 2010, fixed rates ranged from 12.50 to 27 euros per person, depending on the number in your party.
Take an Air France "Les Cars" bus. Line 2 travels to Arc de Triomphe and Port Maillot, Line 4 to Gare Lyon and Gare Montparnasse. Buses run every 15 to 20 minutes and take 45 to 60 minutes. As of 2010, tickets cost 16.50 euros per person. Tickets can be purchased on board or at the ticket counter at CDG.
Ride the Roissy Bus, which runs every 15-20 minutes between CDG and 9 Rue Scribe near the Opera Garnier. Allow 45 to 60 minutes in either direction. As of 2010, tickets cost 9.10 euros per person. Tickets can be purchased on board.
Take the RER train, which makes seven stops in Paris, four connecting to the Metro. Trains run every 15 minutes and take from 25 to 45 minutes, depending on the stop. Two stations at CDG serve terminals 1, 2 and 3. The Roissy B3 trains depart Paris for CDG from Gare du Nord. As of 2010, the fare is 8.50 euros per person. Tickets can be purchased at station ticket booths (long lines) or kiosks, which accept only euro coins or credit cards containing "smart" chips.