For the first time, one nominated next of kin of a service person who died while serving in the Armed Forces will be eligible for the scheme.
The offer is intended to help families travel to Remembrance services and commemorative events, including the Cenotaph in London.
Eligible relatives have until 16 October to apply for a free ticket through the Defence Medical Welfare Service.
The scheme is open to one nominated parent, spouse, partner, child or sibling of a service person who died while serving.
Applicants will need to provide supporting evidence such as a valedictory letter, condolence letter or military pension statement.
Rail Minister Lord Hendy said: “Remembrance Weekend is a time for the nation to come together to honour those who made the ultimate sacrifice whilst serving our country.
“Bereaved families are at the heart of these commemorations, and the cost of travel should not prevent them from being there to remember their loved ones.
“Extending free rail travel to next of kin will help more families attend Remembrance events, standing alongside communities, veterans and serving members of our Armed Forces as we honour and remember those who served.”
Mikki Brett, whose husband CPO Stuart Brett served in the Royal Navy and died in service in April 2023, will use the offer to travel to the Cenotaph.
She said: “It's fantastic news that the in-service bereaved have been recognised for the support given to their loved ones with free train fares to remembrance events this year.”
All National Rail train operators are taking part apart from Transport for London and the Elizabeth Line.
People travelling to London can make their outward journey on Saturday 7 November or Remembrance Sunday on 8 November. Return journeys are valid on Remembrance Sunday only.
For services elsewhere in Britain, both the outward and return journeys must take place on Remembrance Sunday.
Free rail travel will also continue to be available to serving military personnel and eligible veterans during Remembrance events.
