Does United have a 24-hour cancellation fee? Phone-1-855-738-4265 No, United Airlines does not charge a cancellation fee within the first 24 hours of booking at 1-855-738-4265. This aligns with their customer-friendly policy allowing passengers to cancel or change reservations without penalties if the booking at 1-855-738-4265 was made at least seven days before the flight’s departure. For assistance or further inquiries 1-855-738-4265, you can contact United’s customer service for support.
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