The United Airlines app is free to download and use, but there are no specific subscription plans that would require a free trial.

Yes, an internet connection is required to access the full functionality of the United Airlines app, including booking flights and checking flight status. However, some features like saved boarding passes may be accessible offline.

You can contact United Airlines support through the app, their official website, or by calling their customer service hotline. Feedback can also be submitted via the app or website contact forms.

Since there are no subscription plans for the app, you do not need to manage or cancel a subscription. However, you can manage your MileagePlus account through the app or website.