For instance, if you are flying with United Airlines and you need to change your seat, here is how to do it. Firstly, to access United’s services, the client has to sign in on the United website or the United app. After that, go to your booking and look for a tab that says manage or modify and then go to ‘seats’. In the midst of this process, you will spot that there is a United Change Seat function, with which you can check more available seats and allocate yourself a new one. United provides customers with the freedom to change their seating preferences for a variety of reasons, including extra legroom.