Natasha...we need the below round trip flights for the Bach family again.... Flight Boston to Berlin via Frankurt: December 17th 16:30 BOS - FRA Lufthansa LI-I 423 06:45+1 FRA - TXL Flughafen Frankfurt am Main FRA Lufthansa LH 170 Return: January 4th 2018 BER to FRA (stop over night) 10:45 TXL - FRA