New flexible fares are being introduced by Eurostar ahead of the reinstatement of high speed trains to Amsterdam, Rotterdam and Disneyland Paris.
The Dutch high speed rail connection resumes from London on July 9 initially with a daily service with fares starting at £40 one-way.
Travel to Disneyland Paris will restart from August 2 with fares leading in at £39.
All fares are now available to exchange with no fee, up to 14 days before departure.
The arrangement applies to all bookings made from today (July 1) until December 31.
They are valid for any dates of travel available at the time of purchase, according to the operator.
Tickets will go on sale from Thursday for travel over the Christmas period until January 31, starting at £39 each way.
Eurostar has introduced new hygiene measures on board and in stations, to provide customers with a “comfortable and safe” experience.
A new seat map ensures travellers are seated at a safe distance apart respecting social distancing guidelines.
Trains are deep cleaned before every journey, and cleaning teams are on board to regularly disinfect high contact areas.
All travellers must wear a mask on board and in stations, in line with government regulations.