United seating after an Expedia booking
For a United flight, the United app is a useful next place to review alternatives: United describes seat changes, check-in, and boarding-pass access among its functions. Keep the airline reservation and any separate seat purchase together when reviewing the trip. Compare the seat currently displayed with your confirmation before paying again. If the booking cannot be retrieved or the seat is missing, ask Expedia or United which reservation reference and service channel apply; the cited sources do not establish automatic seat synchronization. Check the operating-airline information too. Expedia displays the operator when it differs from the airline with which the flight was booked. A United-marketed itinerary is not enough to apply United app capabilities to another carrier’s aircraft, and Expedia’s terms do not replace the airline’s seating conditions.

Important unknowns
- Expedia-to-United retrieval flow, fees and synchronization were not verified.
- Live canonical owner and nearest-page content are UNKNOWN because the sitemap index could not be retrieved.
Sources and last checked
- Terms of Servicehttps://www.expedia.com/lp/b/terms-of-service
- United Airlines app: developer descriptionhttps://apps.apple.com/us/app/united-airlines/id449945214