Aer Lingus and Ryanair have both cancelled flights tomorrow as a result of planned industrial action by French air traffic controllers.
Ryanair has cancelled 26 flights in and out of Shannon and Dublin airports and warned of further cancellations.
It said passengers should check the status of their flights before leaving for the airport.
The airline has cancelled more than 250 flights across Europe tomorrow.
Meanwhile, Aer Lingus flights EI 522 Dublin to Paris and EI 523 Paris to Dublin tomorrow have both been cancelled.
All other Aer Lingus flights between Ireland and France are scheduled to operate.
"We will notify customers through all available communications channels should this situation change," an Aer Lingus spokesperson said.
Two Air France flights from Dublin to Paris-Charles De Gaulle have also been cancelled tomorrow but the airline expects its other flights from Dublin to operate as normal.
Air traffic controllers in France are poised to go on strike tomorrow, likely leading to cancellation of 40% of flights in French airspace.
"Disruption is expected over the whole country," said the DGAC civil aviation authority.
It requested that companies cancel 40% of flights as a preventative measure.
The main air traffic controllers' union, the SNCTA, has also urged industrial action on 16-18 April and 29 April to 2 May.
They are calling for talks over working practices and retirement age, currently set at 59 for air traffic controllers.
The SNCTA union had originally threatened to go on strike earlier but scrapped the industrial action in the wake of the Germanwings crash that killed 150 people.
