Home Slickdeals Seattle to Berlin Germany $373-$380 RT Airfares on United Airlines or Lufthansa... Slickdeals Seattle to Berlin Germany $373-$380 RT Airfares on United Airlines or Lufthansa (Limited Travel March-April 2019) By ARCOM - 5 January 2019 157 0 SHARE Facebook Twitter Go to the deal page: Seattle to Berlin Germany $373-$380 RT Airfares on United Airlines or Lufthansa (Limited Travel March-April 2019)