What should I do if my flight is delayed and my COVID test exceeds the 72-hour validity before departure?

Travelers should be aware that if their flight is delayed beyond the 72 hours after taking their COVID test, they may need to undergo another test, which can be costly. It is advisable to take the test at the airport or the day before departure to mitigate the risk of exceeding the test validity. Additionally, it's important to check-in before the 72-hour window expires to avoid complications.