What should I do if my flight is delayed after a negative COVID test that is no longer within the 72-hour requirement?

The community discussion emphasizes that if a flight is delayed after obtaining a negative COVID-19 test result, the airline is likely to consider the scheduled departure time for validity, but individuals should check with their airline for specific policies. Some comments suggest that typically, airlines might allow some flexibility for delays outside a passenger's control, while others indicate that it's safer to plan as though a new test may be required if outside the 72-hour window. Additional insights include experiences with testing requirements prior to entering Thailand.