Travellers heading to and from France face five days of chaos due to a general strike across the country over pension reform.
Flights, trains and buses will all be hit by the biggest wave of industrial action the country has faced for decades – which begins on Thursday.
There are no tickets available on Eurostar trains until Tuesday, with the company saying it has cancelled almost 100 services between now and then.
Airlines including Easyjet, British Airways and Ryanair have opted to cancel many of their flights to and from France, while Air France has said up to a third of its domestic flights would be cancelled.
The SNCF railway company expects nine out of 10 high-speed trains to be cancelled.
Most of the subway system in Paris is also affected.
An extra 6,000 police are being deployed across the French capital with the force warning of possible violence and damage.
Workers’ unions are planning a large-scale protest march on Thursday through the city against President Emmanuel Macron’s plan to streamline the country’s 42 state pension systems.
Those taking part fear they will have to work longer and earn less when they retire.
All businesses, cafes and restaurants along the route have been ordered to close for the day by police.
Paris police chief Didier Lallement said the move comes amid fears that yellow vest protest groups – called “Gilets Jaunes” in French – and extremist troublemakers could join the demonstrations.
Authorities have banned protests from taking place on the Champs-Elysees, around the presidential palace, parliament and Notre Dame Cathedral.
The Eiffel Tower is warning tourists to delay a visit to the famous monument because the strike will disrupt access.
The Louvre Museum said its opening on Thursday may be delayed and some of its rooms may be closed.
Hotels across Paris have reported receiving cancellations from tourists who have decided against travelling to France during the industrial action.
Around 250 official demonstrations will be held across the country, with many more where the authorities have not been notified.
Ghislain Coutard, who started the yellow vest movement, told Sky News on Wednesday the protests could lead to a “new beginning” for his country.
“For me, it’s make or break. This is either a new beginning or it’s the end,” he said.
The national strike across France comes as thousands of rail passengers in southern England face misery as a 27-day walkout until New Year’s Day by South Western Railway staff enters its fourth day.