TUI has warned that more countries are likely to follow Greece and ban Brits due to our poor coronavirus record.
It will mean people could have their holidays cancelled at the last minute.
TUI’s Managing Director Andrew Flintham made the warning after the Greek government announced yesterday it had extended its ban on flights from the UK until July 15.
Following the announcement TUI, easyJet, TUI, Ryanair, Jet2 and British Airways all cancelled holidays and flights to Greece leaving thousands of people disappointed.
Downing Street is expected to announce the full list of countries that will make up the new travel traffic light system later this week.
Greece was expected to be on the list but now this may change.
Speaking to Radio 4's Today programme, Mr Flintham said: “The conversations with overseas countries, as Greece has demonstrated, is a two-way decision.
“So I think there are still going to be a few bumps in the road and I still think there will be some countries that won't be opening up - which means we'll have to cancel a few more holidays, but hopefully not as many as we've been cancelling.”
TUI were due to fly to Corfu, Crete, Kos and Rhodes from the three biggest UK airports, Gatwick, Manchester and Birmingham.
But following the Greek government announcement the UK's biggest tour operator was forced to cancel holidays and flights.
Despite this, Mr Flintham added: "It’s obviously frustrating but it's also good news that we're actually getting news around us being able to restart holidays.
“We announced actually over the weekend that we were going to restart our holiday programme on July 11 without any real official confirmation from the government.
“So Greece saying they expect our customers to be able to go there from July 15 is a good thing, as we can plan and people can book and enjoy their holidays there.”
