Boarding a flight after a layover involves a few specific steps that vary depending on whether you are traveling domestically or internationally. If you are on a domestic layover with a single airline, you typically stay within the "airside" of the terminal; you simply get off your first plane, check the "Departures" monitors for your next gate, and walk there. You do not need to clear security again or reclaim your checked bags, as they are "checked through" to your final destination. However, if you are on an international layover or switching to a different airline that doesn't have a baggage agreement, you may be required to pass through immigration, collect your luggage, and re-check it at the departures counter before clearing security again. Once at your new gate, the boarding process is identical to your first flight: you wait for your boarding group to be called and present your second boarding pass (either on your phone or paper) to the agent. In 2026, most major airports feature "Transfer Desks" that can help you if your first flight was delayed and you missed your connection, ensuring you are rebooked on the next available flight.