I will be travelling for 4 days in Paris.
Arrive in Orly Airport and i will stay in house of friends in Saint Michelle sur Orge.
The next day i will visit Eiffel tower, the day after, Versailles palace and the last day, Disneyland.
Which is the most affordable pass?
Many thanks and best regards
If you arrive Monday - Thursday, Navigo Découverte will be your best pass. You can take Tram 7 to connect with RER C to get to Saint Michel sur Orge. Navigo will also cover you for Versailles, Eiffel, Disneyland.
Note that Navigo is not valid for the Orlyval train, but Orlybus, Tram 7 are both covered by Navigo.