Lufthansa has cancelled the majority of its flights scheduled for Monday, April 22, due to a planned warning strike.

The German airline said about only about 30 of its flights would run as planned on Monday, out of more than 1,700 originally scheduled.

Only a select few short-haul flights will operate on Monday, such as in Berlin, where strike actions should end by 2:30 p.m. CET. In all, only 20 of the 1,650 planned Lufthansa short-haul flights on Monday will operate due to the limited flight schedule.

In addition to the cancellations in Germany and Europe, massive flight cancellations and delays are to be expected for long-haul flights beginning Sunday April, 21. Of the 50 planned flights in Frankfurt, only six will operate; in Munich, of the 17 planned flights, only three will operate; whereas, in Dusseldorf all three long-haul flights are scheduled to operate as planned.

Lufthansa has cancelled the majority of its flights scheduled for Monday, April 22, due to a planned warning strike

Flights operated by Germanwings will not be affected, says the company.

Ground staff have called a one-day strike in a pay dispute.

Last week Lufthansa rejected union demands for a 5.2% wage increase over the next 12 months.

Strikers are also looking for guarantees over job cuts.

Like many airlines, Lufthansa is looking to cut costs in the face of stiff competition from low-cost carriers and big Gulf airlines, as well as rising fuel prices.

Unions staged a similar one-day strike last month. Short “warning strikes” are a common tactic among German unions, designed to put pressure on wage negotiations.

In a statement on its website, Lufthansa said passengers should expect “massive” flight cancellations and delays that will start to affect long-haul flights from Sunday.

Lufthansa also asks passengers to check the status of their flight before leaving for the airport.