- 1). Visit the United Airlines website up to 24 hours prior to your time of departure (see Resources).
- 2). Click on the "Check In" tab. Select from the drop-down menu whether you'll be checking in using your confirmation number, Mileage Plus number, email address or your credit card number.
- 3). Enter your confirmation number or credit card number and your last name and click "Continue to Check In." If you opt to check in using your Mileage Plus number or email address, enter the data and your password rather than your last name.
- 4). Review your flight information. You can upgrade your seat if you desire. Cick "Print" to print your boarding passes.
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