Check out the Travel and Lesuire article below that gives suggestions if you know you are going to miss your flight in advance due to uncontrolled circumstances. Also which airlines are the best to work with.

https://www.travelandleisure.com/travel-tips/what-happens-when-you-miss-a-flight?hid=b1242e8fbb4ccf5f7faeaf2d15119e08d64d4c5f&did=849154-20220930&utm_campaign=just-in_newsletter&utm_source=travelandleisure.com&utm_medium=email&utm_content=093022&cid=849154&mid=98425765214&lctg=139970169