Keyword: air traffic control
Ryanair said it has scrapped 70 flights on Thursday and some easyJet flights are also affected by protest over labour law reforms.
The latest walk-out, which began on Wednesday, is expected to last 36 hours and cause cancellations and delays across Europe.
The main union behind the strike against budget cuts said French government had now recognised the 'importance of investment in the sector'.
Ryanair has said 26 flights to and from France will be cancelled while easyJet say a quarter of their flights could be scrapped at start of dispute.
After a French air traffic controllers' strike caused two days of chaos in the skies, rail services will be hard hit by an unrelated strike Thursday.