German airline Lufthansa says it is canceling 84 long-haul flights because of a pilot strike.

The airline says some 20,000 travelers will be affected by the grounding Tuesday. A further 90 flights will take place as planned.

The pilots union, Vereinigung Cockpit, says it will extend its strike to include medium- and short-haul flights Wednesday. Lufthansa’s 5,400 pilots want the airline to keep paying a transition payment for those wanting to retire early, and are opposed to a restructuring of the airline.

Lufthansa says passengers should check its website,, for details of forthcoming flight cancelations.

This article was from The Associated Press and was legally licensed through the NewsCred publisher network.

Photo Credit: In this April 2, 2014 file picture Lufthansa aircraft are parked as Lufthansa pilots went on a three-day-strike in Frankfurt, Germany. Michael Probst / AP Photo