A third daily Eurostar service is being added to a new route from London to Rotterdam and Amsterdam.
Tickets have gone on sale today for the additional departure which starts on June 11 leading in at £35 one-way.
Journey times are estimated at three hours 13 minutes to Rotterdam and three hours 52 minutes to Amsterdam.
The third service comes in response to customer demand following the introduction of the route to the Netherlands in April last year.
The increased frequency makes it easier for passengers to choose the environmental benefits of high-speed rail over flying, according to the high speed Channel Tunnel passenger service.
A Eurostar journey from London to Amsterdam results in 80% less carbon per passenger than a flight, and the third service will bring Eurostar’s capacity on the route to the equivalent of 12 flights a day, the company claimed.
Chief executive Mike Cooper said: “Our new route to the Netherlands has been met with strong demand from our customers, who increasingly value the ease, comfort and seamless experience of high-speed rail.
“A third train each day will boost capacity whilst offering more choice and flexibility to travellers connecting between these European cities.”