To reach Lodz from Paris, your options are to fly from CDG on AF or LOT (or possibly Lufthansa or KLM with a connection - sometimes the fares are better) or Wizzair from Beauvais to Warsaw-Chopin, then take a bus or taxi to Warsaw's central train station (Warszawa Centralna) and to buy a train ticket to Lodz (120 km or so - even express trains are cheap in Poland) then as mentioned above, another taxi/uber to Bartolini's Lodz-Lublinek base. Ryanair also flies from Beauvais to Warsaw-Modlin, 40 km North of Warsaw. Then you can get a shuttle bus to the city centre and get on the train to Lodz.
Cheers
