For domestic flights, it is generally recommended to arrive at the airport at least two hours prior to your scheduled departure. This allows ample time for check-in, security screening, and any unexpected delays that may arise. Arriving early can help alleviate stress and ensure that you do not miss your flight. Jet Travel advises travelers to check their specific airline's guidelines, as some may have different recommendations based on the airport or the time of day. Additionally, during busy travel periods such as holidays or weekends, you may want to allocate extra time to navigate larger crowds and longer lines. It is always wise to stay informed about the airport and airline's latest policies, which can often be found on their respective websites.