Lufthansa is teaming up with United on business class fare deals to Europe this summer. Book and buy your tickets by 4th July 2006 for travel between 1st July and 4th September and you could enjoy great discounts. Business Class Specials for Summer Travel include Dallas/Ft. Worth (DFW) to Amsterdam (AMS), $1,036; Detroit (DTW) to London (LHR or LCY), $1,079; Charlotte (CLT) to Brussels (BRU), $1,242.