Travellers heading to and from France face five days of chaos due to a general strike across the country.
French public sector workers began the walkouts on Thursday over French President Emmanuel Macron’s plans to reform the nation’s pension system.
Flights, trains and buses are being hit by the biggest wave of industrial action the country has faced for decades.
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.
Signs at Paris Charles de Gaulle Airport showed “cancelled” notices.
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.
Commuters in Paris got out their bicycles, turned to carpooling apps or worked from home to avoid the crush on the limited train and metro services.
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 Mr Macron’s plan to streamline the country’s 42 state pension systems.
The president says the system is unfair and too costly. He wants a single, points-based system under which for each euro contributed, every pensioner has equal rights.
Railway and airport workers, teachers, truck drivers and medics are among those joining the industrial action, which threatens to paralyse France for days.
Those taking part fear they will have to work longer and earn less when they retire.
All businesses, cafes and restaurants along the route in Paris 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 urging tourists to delay visiting 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.