The advantages of taking a taxi from Paris-Charles de Gaulle Airport into central Paris are obvious: you load yourself and your luggage into a taxi at the airport, sit back, relax, and let the driver take you directly to your hotel or rental apartment.

The big disadvantage is cost: the fare is probably 60€ to 85€ for the ride.

Also, depending on traffic, the taxi ride might take longer than the RER train, and might be almost the same as the much cheaper, similarly comfortable Air France bus or RoissyBus.

Of course, the number of travelers in your party affects cost also. There may not be much difference in cost between three airport bus fares and one taxi fare for three passengers.

Whether or not to use a taxi depends to some extent how close your destination is to an RER Line B train station, Métro station, or airport bus stop: if close to a station, you might save time—and will certainly save a lot of money—by taking the train and Métro, or an airport bus.

If your destination is a long walk from an RER Line B train or Métro station, or from the Air France bus or RoissyBus stops, you may have to switch to a taxi in central Paris.

Although this short in-the-city taxi ride will cost much less than the 25-km ride from the airport, you will still have to pay the minimum fare, and it's a hassle to change vehicles.