Yes, on a connecting flight, you must physically disembark from your first aircraft and board a different one at an intermediate airport (the "hub"). This is distinct from a "direct" flight (which may stop but doesn't require a plane change) or a non-stop flight. In 2026, many major hubs like London Heathrow or Atlanta Hartsfield-Jackson have streamlined this process, but you must still check your boarding pass for a new gate number. If your connection is international, you may also need to clear security or customs at the transfer point. Your checked luggage is typically "checked through" to your final destination if both flights are on the same ticket, but you should always verify this with the gate agent to avoid arriving at your destination without your bags.