While purchasing the first ticket, you can mark the Return button, or after purchasing one-way, you can re-enter the system and purchase the return tickets by examining the reverse route sign with the reverse route sign.
When you search for flights between Paris and Leipzig/Halle, all active companies and flight times on the date you entered are listed. You can find the cheapest flight tickets by sorting this list by price.
Between Paris - Leipzig/Halle
Leipzig,
Beauvais Tille,
Charles De Gaulle,
Le Bourget,
Orly,
Pontoise Cormeilles,
Toussus Le Noble,
Villacoublay Velizy,
Chalons Vatry,
Massy TGV
airports are used.