Generally no restrictions for EU citizens. Usually not required for most other nationalities for stays of up to 90 days.
Few roads don't lead to Paris, one of the most visited destinations on earth. Practically every major airline flies through one of its three airports, and most European train and bus routes cross it.
On public transport, children under four years travel free and those aged four to nine years (inclusive) pay half price; exceptions are noted.
Flights, tours and rail tickets can be booked online at www.lonelyplanet.com.
The best price found from United States to Paris is on June 18th, 2019, travelling with Austrian Airlines. See more options, compare prices and book: search flights.
Walking is a pleasure in Paris, and the city also has one of the most efficient and inexpensive public-transport systems in the world, making getting around a breeze.