Flights to France face disruption and delay today due to strike action by French air traffic controllers.
The industrial action is also affecting other flights which use French airspace.
UK airports issued alerts warning passengers of disruption to other European destinations in addition to flights serving France.
EasyJet urged passengers flying to or from French airports to check the status of their flight before leaving from home.
“It is possible that we will see some delays to flights that operate through French airspace,” the airline said.
“We are taking proactive measures to re-route these flights where possible. Although outside of easyJet’s control, we’re sorry if your journey is impacted by this strike action.”
The carrier said the French Directorate General for Civil Aviation confirmed that it expects an “undetermined level of participation” in the public workers’ strike.
Eurocontrol reported that the main problems this morning seem to be in the northwest of France and Marseille.
Luton airport cautioned that delays could be expected until 6am tomorrow.
French national rail company SNCF also announced that services on certain lines will be reduced until Wednesday. Eurolines has confirmed its London to Paris service is running as normal despite the rail disruption.