很简单。

1.你先在AMEX 选择 United as your preferred airline.

2.然后， https://www.united.com/offers/travelbank

3.Login, use your AMEX plat to add money to your travel bank, only $50 or $100 each time.

4. you will see your airline credit gauge move in a few days under your AMEX benefits.

5. you will get your statement credits in a week or so.

6. you can use the travel bank to pay for tickets, but only limited to tickets on United metal and issue by United, not award tickets, not partner airline tickets.