This appeal follows hundreds of flight cancellations and delays impacting 40 major airports across the country.
Sara Nelson, AFA-CWA International president, highlighted concerns over safety and security risks, predicting a “ripple effect” on flight crews and the wider economy.
Union members are already experiencing the economic consequences of the ongoing shutdown, Nelson told CNN.
The situation is worsened by shortages of federal aviation workers, furloughs and fewer security personnel and air traffic controllers, leading to reduced flights and strained cabin crews.