When you buy a ticket on United, you have to follow the steps. Then, on the same website, you'll be offered the option to pay by credit card. Further down, you'll see UPLIFT. There you can apply and purchase the ticket in installments. You can even make advance payments. That's what I do. I pay...
Consider planning flights with United. You can use the Uplift payment option and pay for your flight in installments. I'm an Argentine legally residing in the United States, and I always use it. My payments average 6 out of 220, more or less. It's a great way to travel without worrying about the...