Starting route
Via Lyon, Turin and Milan
London → Lille → Lyon → Turin → Milan → Naples
Take Eurostar to Lille, continue to Lyon and stay overnight. The next stage is Frecciarossa through Turin to Milan, followed by an Italian high-speed service to Naples. Search starts with these connections and the Lyon stay.
Another way
A stop in Paris
London → Paris → Turin → Milan → Naples
Choose Paris if you want time in the French capital. This changes the first part of the trip and introduces the Gare du Nord to Gare de Lyon transfer. Compare the onward Italian service before deciding where to spend the night.
Another way
Through Switzerland
London → Paris → Zurich → Milan → Naples
Add Zürich as a deliberate Swiss stop and continue towards Milan. This is a longer itinerary with more connections to examine. It suits a trip with time for another city rather than a race to Naples.
Keep the Milan station in view
A Frecciarossa arriving at Milano Centrale puts you at the main station for onward high-speed departures. Other international services may use Porta Garibaldi. Check the named stations, not just the city, before buying separate tickets.
Naples is an arrival, not a ferry terminal
Napoli Centrale is the rail destination. Travel to a ferry or a local train is a separate part of the day: leave space in your plans for that onward connection instead of treating arrival in Naples as arrival at the port.