Irish passengers have been urged to check their travel plans before heading to the airport on Friday and Monday after Aer Lingus and Ryanair were forced to cancel a string of flights due to strikes and the Queen's funeral.
Aer Lingus has cancelled four flights between Dublin and Paris today due to industrial action being taken by French air traffic controllers.
The affected flights are EI524, EI525, EI528 and EI529.
The airline says passengers due to travel can change their flight bookings free of charge via the airline's online booking facility or call centre.
Aer Lingus passengers travelling on Monday, September 19, will also be affected by flight cancellations on the Dublin Heathrow route, as Heathrow airport aims to reduce noise during the Queen's funeral.
The six flights affected are EI160, EI165, EI168, EI169, EI176 and EI177.
Two flights between Belfast and Heathrow have also been affected. These are EI1932 and EI1935.
Aer Lingus said they have re-accommodated as many passengers as possible on other flights and will be contacting passengers individually and flight changes will be offered free of charge.
Ryanair also announced on Thursday that it had been forced to cancel 420 flights affecting 80,000 passengers this Friday due to European strikes.
The airline has called on the EU to take immediate action to protect overflights over French airspace while French Air Traffic Control (ATC) go on an all-out one-day strike.
All 80,000 Ryanair customers affected by the action have been notified and have been advised of their options via email or SMS.
A spokesperson for Ryanair said in a statement: "Ryanair sincerely apologises to its customers for these unnecessary disruptions that this French ATC strike will cause them."
Ryanair Operations Director Neal McMahon said the strike was "inexplicable" and "inexcusable".
He said: "It is inexplicable that thousands of European citizens/visitors will have their travel plans unfairly disrupted tomorrow, (Fri 16th Sept) by yet another French ATC strike. Ryanair is once again calling for immediate EU action to prevent these ATC strikes disrupting the travel plans of thousands of European citizens/visitors.
"It is inexcusable that passengers who are not even flying to/from France are disrupted because they overfly French Airspace at a time when French laws protect French domestic flights. It is time that the EU step in and protect overflights so that European passengers are not repeatedly held to ransom by a tiny French ATC union."
READ NEXT:
Fireball which lit up night sky was 'space debris', experts conclude
Crowds gather as long-awaited Penneys store opens in Tallaght, Dublin
Man claiming to be King Charles and Camilla's 'secret son' wrote to Queen demanding paternity test
Get breaking news to your inbox by signing up to our newsletter