How to Online Check-In with United Airlines?

Online check-in with United Airlines is a fast, convenient way to get ready for your flight without waiting in long airport lines. United Airlines allows passengers to check in online starting 24 hours before the scheduled departure and up until 60 minutes before takeoff for domestic flights and up to 90 minutes before international flights. This can be done either on the United Airlines website or by using the United mobile app, both of which are user-friendly and efficient.

To begin the online check-in process, you’ll need your confirmation number and last name, or you can log in using your MileagePlus account. Once logged in, you’ll be guided through a few simple steps: confirming your itinerary, selecting or updating seats, entering passport information (for international flights), and adding any checked baggage if needed. You can also pay for upgrades or special services like extra legroom or priority boarding during check-in.

Once you complete the check-in, you’ll be able to download and print your boarding pass or save a mobile boarding pass to your smartphone. If you’re traveling with carry-on bags only, you can go straight to the security checkpoint upon arrival at the airport. If you have checked baggage, you should still visit the bag drop counter, which usually opens 3 hours before departure and closes 45 to 60 minutes before takeoff, depending on your destination.

Checking in online helps save time and reduce stress, especially during peak travel periods. If you’re flying internationally, make sure your passport and any visa or travel documents are up to date and ready to be reviewed. United Airlines may also prompt you to review destination-specific requirements, including COVID-19 restrictions or customs declarations.

In addition to the website and app, United offers self-service kiosks at most major airports, which can be used if you were unable to check in online. These kiosks allow you to print boarding passes and baggage tags, and are great alternatives if you're in a hurry.

If you run into any issues during the online check-in process—such as problems with your reservation, technical errors, or questions about special travel needs—you can always contact United Airlines customer support for quick help.

To enjoy a smoother travel experience, make sure to check in early, verify your flight time, and arrive at the airport with enough time to clear security and find your gate.