Since last October, journeys between the two UK nations have been banned unless for work or education, but this is set to change on Monday due to the improving situation with Covid.
Combining a fast rollout of vaccines and lockdown has led to a reduced number of coronavirus cases in the UK.
The resumption of cross-border travel coincides with further relaxation of rules that will allow domestic holidays to occur again.
From tomorrow, people in England and Wales will be allowed to stay overnight in self-contained accommodation with members of their household and/or bubble.
Welsh Government First Minister Mark Drakeford confirmed last month he intended to resume cross-border travel in April, tweeting: ‘Thanks to a real team effort across Wales, coronavirus cases remain stable.
‘We have the headroom to continue our careful, step-by-step approach to relaxing restrictions.’
He added: ‘Our amazing tourism sector will begin to re-open. We’ll start by lifting the stay local rule and enabling self-contained accommodation to open to people living in Wales from the same household or support bubble.’
Scotland has not confirmed when travel between Scotland and England will be allowed but First Minister Nicola Sturgeon previously said she hoped that would happen around April 26.
Currently, in Northern Ireland, non-essential travel in and out of the country has been advised against.
Also, rules In England still state people must minimise domestic travel where they can and international holidays are still illegal.
Outdoor gatherings must still be limited to six people or two households and people should continue to work from home where they can.
A successful vaccination program has meant cross-border travel can resume
Most outdoor attractions such as zoos and theme parks can reopen, although wider social distancing rules will still apply to prevent indoor mixing between different households.
Indoor leisure facilities such as gyms and swimming pools will also be opened, but for use by people on their own or in household groups.
All remaining restrictions on social contact could be lifted from June 21.