Lufthansa criticized the walkouts as disproportionate but said it expects to offer a largely normal flight program Friday. Sign up to Simon Calder’s free travel email for expert advice and money-saving discounts Get Simon Calder’s Travel email Get Simon Calder’s Travel email Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice A wave of flight cancellations hit Lufthansa on Thursday as pilots and cabin crew unions staged a one-

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