United Airlines has introduced a new mobile app feature for passengers whose journeys have been disrupted. Customers who are rebooked onto a later United flight after a delay or cancellation can now join the standby list for up to three earlier eligible flights. The option applies to flights heading to the same destination. United announced the feature on 1 September 2026.
Standby means that a passenger asks to travel on another flight without receiving a seat immediately. A seat is only assigned if one becomes available, for example, after another traveller cancels or changes their booking. With the new tool, passengers select up to three possible earlier flights through the app. United then monitors seat availability in the background instead of requiring customers to repeatedly check the app themselves.
The passenger’s replacement booking remains confirmed while they wait for an earlier option. If a seat becomes available, United sends a text message, and the customer can choose whether to switch flights. If they decide not to take it, they keep their existing confirmed reservation. This offers more flexibility for travellers who have been moved from an afternoon flight to a much later evening departure.
“This feature reflects our commitment to making travel more seamless and less stressful for our customers,” Jennifer Schwierzke, United’s Vice President of Customer Operations, Strategy and Execution, said. “During disruptions, customers can keep their confirmed itinerary and stand by for three additional flights.” She added that United monitors availability and alerts customers when a seat opens up. The airline describes the combination of multi-flight standby and a protected confirmed reservation as an industry first.
The new option arrived ahead of the busy US Labour Day travel period. United expects more than 3.4 million passengers to fly with the airline between 3 and 8 September, around 300,000 more than during the same period last year. During crowded travel periods, a passenger may have several flights to choose from but few available seats. The tool cannot create an empty seat on a full aircraft, but it could save travellers time and reduce the need to keep refreshing their screen.
The feature may be particularly useful for passengers travelling through one of United’s large hubs, where several flights to the same destination may operate in a day. A missed connection can otherwise mean waiting many hours for the next available departure. Rather than joining a long queue at an airport service desk, travellers can see their options and make a request through their phone. Passengers should still ensure that their phone is charged and that they can receive the text message from United.
It is part of a wider effort by the airline to turn its app into a tool for managing disrupted journeys. United says customers can already use it to rebook flights, receive eligible meal or hotel vouchers and track checked baggage. The app also provides estimated security waiting times at United’s US hubs and shows where an inbound aircraft is coming from. Travellers using an Apple AirTag or another Find My network accessory can also share its location with United’s customer service team if their baggage is delayed or mishandled.
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United has also developed app functions for passengers with tight connections. Its ConnectionSaver technology assesses whether a departing aircraft can be held briefly for passengers arriving on a delayed flight, without causing wider operational problems. The app can show the next gate, estimated walking times and live updates about the connection. If the aircraft cannot wait, the new standby feature may offer another way for passengers to try to leave earlier after being rebooked.
Digital tools can make straightforward disruption cases easier to handle, but they do not replace airline staff in every situation. Travellers with complex itineraries, special assistance needs, or no further flights to their destination may still need help from an agent. Flight delays can also be caused by weather, crew shortages, air traffic control restrictions or aircraft issues, none of which an app can solve. The new feature mainly gives passengers more control over the options that remain available.
The update also fits within United’s broader focus on customer experience as the airline expands its network. In August, the carrier announced its largest international expansion to date, with 10 new destinations planned for 2027. As more passengers pass through its hubs and connect to international flights, quick access to rebooking information could become increasingly important. For now, the three-flight standby tool gives disrupted passengers a clearer way to look for an earlier route home without giving up the flight they already have.
