There are a few ways to book United Airlines flights:
You can go to the FaresMatch website and search for flights by entering your departure and arrival cities, dates of travel, and number of passengers. Once you have found a flight that meets your needs, you can book it online using a credit or debit card.
You can also book United Airlines flights over the phone by calling the United Airlines reservation center +1-800-918-3039.
Whichever method you choose, be sure to have your passport and any other necessary documents ready, as well as your payment information.