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.
The train strike, starting late Tuesday in protest at a reform of railways structure, coincides with that of taxi drivers against minicab services.
The strikes throughout May are in protest at a law requiring two-day advance notification of strike action and the use of foreign pilots.
At a joint press conference in Paris, US Secretary of State and his French counterpart say countries ready to join attacks number 'double digits'.
French president François Hollande has made clear that France will join the US in military strikes against the Syrian regime of Bashar al-Assad, dismissing calls for a vote of approval beforehand in parliament. As illustrated in yesterday’s heated debate in the lower house, the National Assembly, political and public opinion is deeply divided, both over the legality and consequences of the planned strikes. Lénaïg Bredoux and Caroline Donati have talked to senior French officials and experts close to the Syrian dossier, many of whom agreed to be interviewed on condition of anonymity, to find out why Hollande appears to have been finally wrongfooted amid a rushed and chaotic final denouement to a crisis of more than two years, and which one government advisor says is down to “a series of balls-ups”.