The walk-out affected about 300 flights to and from Germany’s capital, AP reported.
Labor union Verdi said its members were seeking a raise of 500 euros ($544) per month.
German news agency dpa reported that employers have offered staff a one-off payment of 2,000 euros.
Germany experienced its highest annual inflation in more than 70 years last year.
Sharp increases in the cost of food and energy saw full-year inflation reach 7.9% in 2022.