*£29 one way to Paris or Brussels, based on a return trip in Standard Class. £35 one way to Amsterdam in Standard Class. There are 25,000 seats in Standard from London to Paris. There are 32,000 seats in Standard from Paris to London. There are 15,000 seats in Standard from London to Brussels/Lille/Calais. There are 18,000 seats in Standard from Brussels/Lille/Calais to London. There are 1,400 seats in Standard from London to Lyon/Avignon/Marseille. There are 1,600 seats in Standard from Lyon/Avignon/Marseille to London. There are 2,000 seats in Standard class from London to Rotterdam/Amsterdam on Eurostar direct services only. Seat numbers correct as of 07/01/2019. Tickets at these fares are subject to availability. Blackout dates apply. Availability is limited for travel on Monday mornings, Fridays, Saturdays and Sundays. See here for full Ts&Cs.