Bonus alert for free train tickets and journeys! From July 1 to August 31, 2024, Île-de-France public transport users can enjoy five free journeys thanks to a sponsorship offer from Île-de-France Mobilités (IDFM). This initiative, supported by Valérie Pécresse, is designed to encourage the use of Liberté + season tickets ahead of the fare hike planned for the Olympic Games.