If you miss a layover flight, your status depends entirely on whether your journey was booked as a single ticket or as separate flights. If booked as a single itinerary, the airline is legally responsible for "High-Fidelity" reaccommodation. They must put you on the next available flight to your destination at no extra cost. If the delay was the airline's fault (e.g., mechanical issues) and results in an overnight stay, they are generally required to provide a hotel voucher and meal stipends. However, if the delay was due to "extraordinary circumstances" like a blizzard, they must still rebook you, but they may not be required to pay for your hotel. If you booked separate tickets on different airlines (a "self-transfer"), you have no protection; the second airline will likely mark you as a "no-show" and cancel your ticket, requiring you to buy a new one at current market prices. In 2026, the best "High-Fidelity" move is to head straight to the airline's customer service desk or use their mobile app to see your new automated booking as soon as you realize you won't make the connection.