Originally Posted by
skba1
Well, Atlanta is hardly an international hub (but a huge domestic). So you'll have to do one change somewhere in the world to get to Berlin. Either in the US to get on an AirBerlin flight, or at a major European hub (London Heathrow would be the logical oneworld option). You can also change in Paris (AF), Amsterdam (KLM), Delta fly to Düsseldorf, LH flies to Frankfurt etc.
edit: If choosing Düsseldorf or Frankfurt you can of course take the train to Berlin, but it will be a long journey that I would much recommend to do by plane.
ATL is one of the US's largest international hubs. Fewer than seven airports in the US have more international flights than ATL.
http://usatoday30.usatoday.com/money...-service_N.htm
Since the dated link above, ATL -- DL specifically -- has grown its international route network substantially.
I dislike transiting ATL and am no fan of DL's "loyalty" program, but ATL is way more of an international airport by US standards than all but a handful of US airports.
http://skift.com/2014/01/29/20-top-a...-from-the-u-s/
I'd do AB for travel connecting US with Germany and then something else connecting with ATL.