Holidays abroad are likely to be grounded until late summer as more travel disruption comes as a result of the pandemic.
Many operators have already cancelled overseas trips until the end of next month.
Prime Minister Boris Johnson announced Covid restrictions would be in place until July 19, casting doubts over an early lifting of travel restrictions and an end to the controversial traffic light system.
The next travel review is in place for next week, but reports from both the UK and overseas suggest there will be no change until at least July 20.
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This will mean more than half of the summer season has been lost for UK operators and airlines - with many already be planning ahead towards summer 2022.
According to Spanish reports, Toni Mayor, a spokesperson for hoteliers in Valencia, said UK outbound passenger traffic will be vastly reduced until at least August.
He added: "The overall infection levels in Spain are still high in places and the picture is uneven, so I think we will have to wait.
Another official suggested that it could be September before British tourists are able to arrive freely.
Resorts across Europe are not positive about immediate prospects and not expecting any major changes in the travel advice issued to UK holidaymakers before the beginning of August.
Meanwhile, Turkish tourist officials are also expecting it will be September before travel is resumed to anything like normal levels.
Carriers including British Airways, Virgin Atlantic and easyJet have all cancelled flights until July 19 at the earliest.
The UK's largest tour operator TUI has also axed holidays into July because of "ongoing uncertainty."
On Monday, Boris Johnson advised holidaymakers to follow the government’s “red, amber, green” guidance on foreign travel after being questioned about ministers’ “contradictory” statements.
During a Downing Street press conference, the Prime Minister was asked what advice he recommended travellers to follow after earlier comments by Transport Secretary Grant Shapps and Environment Secretary George Eustice.
Mr Johnson said: “On travel abroad, I think that the most important thing is just to follow the red, amber, green guidance that we’re giving. That’s continually reviewed … I wouldn’t want to give any more guidance than that at this stage.”
Latest data collected by IATA, shows that more than 20 countries have wholly or partially lifted restrictions for vaccinated travellers.
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