From city center to city center by train vs airplane<p>Rough estimate for a flight:<p>- 36 min train from Gare de l’Est to Paris Charles de Gaulle Airport<p>- 90 min arrival before your flight (security, check-in, gate closes before flight leaves, ..)<p>- 100 min flight time<p>- 20 min getting out of the airport<p>- 30 min taxi to Berlin Hbf (assuming no traffic)<p>I think if you have large bags you can add an extra hour (max) even as check-in will take longer, and you'll have to wait for your bag.<p>Which makes it 8,5 hours vs 4.6 hours, or 5.6 hours with bags. (I added 30 minutes to the train as you probably need to be there a little early.)<p>Having done this a couple of times (Amsterdam to Berlin, which is about the same) with both modes of transport. I have to say I prefer the train if I have the time. Much more relaxed way of transportation. You can work the whole way there, and there are ok lunch options on the train.