If you miss your transfer and your entire journey was booked on one single ticket (one confirmation number), the airline is legally obligated to rebook you on the next available flight to your destination at no extra cost. If the next flight isn't until the following day, most "legacy" carriers will also provide vouchers for a hotel and meals. However, if you booked separate tickets (a "self-transfer" or multi-ticket itinerary), the airline owes you nothing; if the first flight is late and you miss the second, you will likely have to buy a new ticket at your own expense. In 2026, many airlines use automated systems to rebook you the moment the system detects you won't make the connection, often sending a new boarding pass to your mobile app before you've even landed. If this doesn't happen, your first step should be to find a gate agent or a transfer desk. Pro tip: Always carry a travel credit card, as the built-in trip delay insurance can cover expenses that airlines might refuse to pay.