The German airline said on Wednesday  Lufthansa is cancelling a total of 1,300 flights with around 180,000 passengers affected as a result of a two-day cabin crew strike.
On Thursday, 700 of 3,000 planned flights are to be cancelled with 600 axed on Friday.
Lufthansa lost a bid to halt the strike at a Frankfurt labour court earlier on Wednesday, but the company said it would appeal.
The industrial action is set to mainly affect flights leaving from Germany.
