United flights booked 888 829 1467 through United.com can be canceled or changed right on the United website. To do this, head to United's website and do the following:
- Log in to your United account.
- Click the "My trips" button on the homepage.
- Click the "Manage trip" button to the right of the trip you'd like to change or cancel.
- Click the "Change flight or Cancel flight" button at the top of the screen.
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