French protesters are blocking the airport at Marseille and Lady Gaga has canceled Paris concerts amid a standoff over a bill to raise the retirement age.
The French Senate is wrapping up debate on the pension reform bill and could vote on it Thursday.
Students are planning nationwide protests to urge legislators to strike it down.
More than a quarter of the nation's gas stations are out of fuel because strikers have been blocking oil refineries and fuel depots. Lady Gaga's website says the singer postponed two Paris concerts "as there is no certainty the trucks can make it" to the show.
In Marseille early Thursday, passengers carried luggage on foot to reach the airport, blocked by union protesters.