01 December 2016, we went for a Day Trip to Paris from London. We took the Eurostar Train. I booked tickets online from Eurostar.Com. The earlier you book, the cheaper the tickets. We took the morning train departing at 05.40hr which reaches Paris at 09.17hr and returning at night 21.13hr departing Paris Nord Station and arriving St. Pancras Station London at 23.39hr. By the way there’s a one hour time difference between London and Paris. (I’m amazed how the trains arrive and depart so punctually to the minute).