German airline Lufthansa has cancelled dozens of flights to and from the UK and Ireland on Monday due to strike action.
Around 100 flights - including departures and arrivals - 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.
The ver.di trade union announced the one-day "warning strike" - a tactic commonly used by German unions to raise pressure in wage talks - on Friday.
Last Wednesday, Lufthansa rejected the union's demand for wage increases of 5.2% over the next year as well as job guarantees.
Last year, the airline and a union representing cabin crews called in an arbitrator to settle a pay dispute after the union staged a series of short-term stoppages that caused numerous flight cancellations.