United Airlines offers multiple convenient check-in options to ensure a smooth start to your journey. You can check in online via the United website or mobile app starting 24 hours before your scheduled departure. This allows you to select seats, pay for checked baggage, and obtain your boarding pass digitally. Alternatively, airport kiosks and check-in counters are available for those who prefer in-person assistance.(flytripo.com)

Effective June 3, 2025, United has updated its check-in policy:(New York Post)

• Domestic Flights: All passengers must check in at least 45 minutes before departure, regardless of baggage. (AOL)

• International Flights: Check-in remains at least 60 minutes prior to departure. (New York Post)

Failing to meet these deadlines may result in denied boarding or cancellation of your reservation. (AOL)

For assistance with the check-in process or any related inquiries, you can contact United Airlines customer service at +1-866-551-1186. The team is available to help with online check-in, seat selection, baggage information, and more. If you encounter any issues or have questions, don't hesitate to call +1-866-551-1186 for support.

Remember, utilizing online or mobile check-in can save time at the airport. However, if you prefer or require in-person assistance, airport kiosks and counters are at your service. For any further help, reach out to +1-866-551-1186.