Egypt’s flagship airliner EgyptAir said it cancelled two roundtrip flights going in and out of Germany’s Frankfurt airport on Tuesday due to a planned strike at the German airport.

In an official statement on Monday evening, the company said it decided to cancel the two flights due to a strike by Frankfurt airport employees which starts on Tuesday 2:00 am and ends at 8:00 pm at current local time in Germany.

The walkout, which will be executed by participating workers in eight German airports, comes as workers demand €20 ($22)per hour from an average of €11.30 and €17.16..

“Due to a strike by security personnel there will be significant disruption at Frankfurt Airport on 15th Jan. Security checks outside the transit area will not be staffed until 8pm and passengers will not be able to reach flights during the strike period,” the official account of Frankfurt Airport tweeted.

Hundreds of flights have been cancelled since the announcement.