High-speed train operator Eurostar currently offers round-trip tickets to/from London from four European cities for €78. You can travel until August with the best availability being in June.
You can find cheap tickets on the following routes:
- Paris to London at €78
- Amsterdam to London at €88
- Rotterdam to London at €88
- Brussels to London at €88
- London to Paris at £78 (~€92)
- London to Brussels at £78 (~€92)
- London to Amsterdam at £78 (~€92)
- London to Rotterdam at £78 (~€92)

Eurostar has two train types, the e300 and e320. In standard class, there is no significant difference between the two. A significant difference from other European train trips is that you clear the border formalities at your departure station and go through a security check. The company offers free Wi-Fi during the trip.
Search & Book
According to the terms & conditions, the cheapest prices are available until May 16, 2022. You can travel until August, although the availability is limited on Fridays, Saturdays and Sundays. Some dates are blocked out.
By clicking the above links, you can get to Eurostar’s best price search. You can find the cheapest dates and book there directly. Alternatively, you can use Trainline, which lets you book combined trips.
Cover Picture: Photo by chan lee on Unsplash