Ryanair has cancelled all Northern European flights until 1pm on Wednesday. It will continue to operate domestic flights throughout Southern Europe.
All flights to and from Northern Europe, including the UK, are cancelled this morning until 1pm. easyJet will continue to operate a limited number of flights in Southern Europe.
Flights to and from London airports remain cancelled today. The airline yesterday flew a jumbo jet 747 from Heathrow Airport with chief executive Willie Walsh on board.
KLM announced yesterday that it operated 10 successful test flights throughout the weekend with no passengers on board. The Dutch airline hopes to receive permission to resume part of its operations.
Air France operated five succesful test flights yesterday. The airline has said that flights departing from and arriving to Paris airports will continue to be cancelled until 8am today.
Lufthansa flew a test flight over the weekend and reported no damages. The German airline is discussing the effects of the closure, including costs of the disruption. Flights are cancelled until 2pm.