German airline Lufthansa has cancelled dozens of flights to and from the UK and Ireland, including to and from Newcastle, due to strike action.
Around 100 flights have been cancelled at airports in London, Manchester, Birmingham, Newcastle, Glasgow, Aberdeen, Edinburgh and Dublin.
The German airports affected by the strike are Frankfurt, Munich, Dusseldorf and Hamburg.
The one-day strike, which is due to a pay dispute, will result in only about 20 of more than 1,650 scheduled short-haul flights operating.
The airline said many long-haul services will also be hit , with only six of 50 planned flights operating at its main Frankfurt hub, and only three of 17 in Munich.
Passengers affected by the cancellations can re-book for free, Lufthansa said.