Originally Posted by Duke787

The EWR - CDG - DUS - EWR roundtrip is 7/1 - 7/20. The CDG - MXP/VCE/FCO - CDG is 7/2 - 7/19 and the EWR - MCO portion is 7/20 timed to leave after the DUS - EWR LH flight returns but you have to search for it as those 3 sets of flights.

Google Flights is your friend here.

Search NYC - CDG for 7/1 - 7/20
Search CDG - MXP/VCE/FCO for 7/2 - 7/19
Search EWR - MCO for 7/20