The Standard reports "British Airways, Ryanair and easyJet are all warning customers to expect disruption to services as a result of the walkout, which is being staged until the end of Sunday". That refers to London airports but others around the country, such as Manchester are reporting flight delays Tuesday.
Why the strike? Air controllers in France fear job losses due to the European Commission's 'Single Sky' initiative
French workers always time their strikes for maximum effect in order to secure victory. The problem is it will affect travellers and economies further afield as travel companies and insurers face an increase in compensation claims.