The walkout by the Cockpit union is to be followed tomorrow by a strike hitting both short-haul and long-haul services.
Lufthansa has canceled 890 flights scheduled Wednesday. The strikes follow four consecutive days of walkouts last week. Lufthansa and Cockpit are far apart in a pay dispute that has dragged on for more than two years.
Lufthansa yesterday failed to persuade a Munich court to issue an injunction blocking the latest strike. The company says that around 82,000 passengers will be affected by Tuesday's walkout and 98,000 by Wednesday's.