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Yes, you can absolutely check in online for your United Airlines flight from Heathrow. United Airlines offers a convenient online check-in option, available 24 hours before your scheduled departure. This service allows you to select your seat, confirm travel details, and even pay for checked baggage—all from the comfort of your home or mobile device.

When flying from the United Airlines LHR Terminal, also known as Terminal 2 or The Queen’s Terminal, online check-in helps you save time and avoid long queues. Once you've checked in online, you can either print your boarding pass or download it to your phone through the United Airlines mobile app. Upon arrival at the airport, simply head to the bag drop counter if you have checked luggage, or proceed directly to security if you're traveling with only carry-on items.

Online check-in is especially helpful at the United Airlines LHR Terminal, which can be busy during peak travel times. It ensures a smoother airport experience, giving you more time to relax, shop, or enjoy the amenities available at Terminal 2 before your flight.