For a trip that includes one or more connections, United will check bags to the final destination stated on the ticket. Your connecting flight must depart within 12 hours of your arrival at the airport in order for your bags to transfer automatically. United will generally transport checked baggage on the same flight as the traveler. If this is not practical, United will arrange to transport the baggage on the next flight with available space.You'll need to claim and re-check baggage if you are:

• Making a voluntary stopover
• Making a connection that involves an overnight stay
• Connecting to an itinerary booked on a separate ticket that doesn't include a Star Alliance partner airline
• Traveling internationally and connecting to a domestic flight within your destination country