Eurostar made £178m in revenue from sales in the first three months of 2010, up more than 5% on the same period in 2009.
In February, Eurostar passengers suffered days of delays and cancellation, after a rail crash in Belgium blocked the high speed line used by Eurostar services.
The number of business travellers using Eurostar failed to rise, but leisure passengers between the UK and the continent rose by 6%. Sales in the business market were "broadly the same as in Q4 2009", said Eurostar.
Two million passengers travelled with Eurostar in the first three months of 2010, compared to 1.9 million in 2009.
Travellers from outside Europe increased by 22%.
Eurostar has also announced that the restructuring of the company is nearing completion. Eurostar is changing from being a partnership between its shareholders, London & Continental Railways, SNCF and SNCB, to a single entity.
Nicolas Petrovic, who recently took over as CEO of Eurostar, said: "I am very pleased that we are moving closer to the new corporate structure which will streamline decision-making, deliver consistency of service standards across the three countries and ensure that the business is well placed to compete in an open access world."
The rail company has also launched a new loyalty programme Eurostar Plus, which although aimed at the leisure sector, has gained 12,000 members since the start of 2010.
For every £1 spend on Eurostar travel on www.eurostar.com, travellers earn one point, and for every 300 points they will receive a £20 voucher. This e-voucher can be used to book future travel on the Eurostar website.
Eurostar Plus sits alongside the existing Eurostar Frequent Traveller programme (EFT), which is aimed at frequent business travellers.
www.eurostar.com