The Eurostar high-speed train connecting London to Paris is included in the Eurail Global Pass, but it is not a "hop-on, hop-on" service. Pass holders must purchase a mandatory seat reservation in advance, which in 2026 typically costs around €30 to €35 ($33–$38) for Standard class. It is vital to book these as early as possible—often up to six months in advance—because Eurostar allocates a limited number of seats specifically for rail pass holders on each train. Once that quota is filled, you may be unable to use your pass even if the train still has empty seats available for full-fare ticket holders. If you are only doing a single trip between London and Paris and haven't planned extensive rail travel elsewhere, it is often cheaper to book a "Point-to-Point" ticket early rather than using a Eurail day. However, for those on a grand European tour, the Eurail pass provides a convenient way to integrate the UK into their continental itinerary.