Many destinations popular with UK holidaymakers have announced plans to reopen their borders this summer.
Here the PA news agency looks at the situation in nine countries:
It is aiming to reopen its borders to foreign tourists from May 14.
Visitors will be required to have been vaccinated, had a recent negative Covid-19 test or have coronavirus antibodies.
The country has said it wants to reopen its borders “as soon as possible”, but has not confirmed how or when UK holidaymakers will be welcomed.
It is considering the use of vaccine passports from May.
The country expects to be open for UK visitors from May 17, which is the earliest date that people in England could be permitted to travel abroad for leisure.
It is likely that holidaymakers will be able to enter without restrictions if they show evidence that they have been vaccinated, have coronavirus antibodies or have received a recent negative test.
Groups of vaccinated tourists will be permitted from May 23.
They must take a pre-departure PCR test, and a post-arrival serological test to prove their vaccination status.
France is allowing UK visitors to enter if they have had a negative PCR test carried out 72 hours before departure.
But they must currently self-isolate for seven days on arrival, before taking another test.
No date has been confirmed for when measures will be eased.
British nationals who have received both doses of a coronavirus vaccine will be welcomed from May 1 without needing to take tests or self-isolate.
Turkey expects to welcome UK holidaymakers this summer even if they have not been vaccinated or taken a recent test.
It will assess its plan for the summer after April 15.
Fully vaccinated UK travellers will be welcomed from June 1.
The country is open for international tourists and does not require them to be tested or vaccinated.