Airlines Waive Change Fees Amid TSA Staffing Shortages

United and Delta are waiving change fees for passengers affected by hours-long waits at airport security due to a partial government shutdown. TSA agents have been working without pay, leading to more callouts. Delta and United have issued advisories for flights from Atlanta and Houston, respectively, while Allegiant Air is offering a "travel with confidence" policy. JetBlue also offers flexible fares.