Eurostar has said it is seeing signs of recovery after a tough 2016.
The high-speed Channel Tunnel train service suffered an operating loss of 28 million euros last year as passenger numbers dropped following the terror attacks in Paris and Brussels.
Bookings fell by four percent to a total of 10 million travellers.
However business start to pick up in December, which was its busiest ever.
That continued through into this year with sales revenues up 12 percent in the first 10 weeks.
The number of US travellers rose by 17 percent in that period compared to early last year.
Chief executive Nicolas Petrovic said: “Despite the difficult trading environment last year, we continued to make major investments in new trains, our stations and our overall service.
“With the return of travellers from the US and business travel on the increase, the market is now rebounding strongly and we are optimistic about the growth prospects for the year.”