To be eligible for this TravelBank Cash offer, you must click the button in the email or log on to united.com/travelbankboost and register by October 31, 2021. Your purchases and purchases by authorized users of the account will count toward your total spending monthly from the month you register through December 31, 2021. TravelBank Cash awarded through the use of the authorized user's card will only be credited to the primary Cardmember's account. All registration and spending deadlines are 11:59 p.m. CT on the last day of the month. Through this personalized offer, you will qualify for and receive $1 TravelBank cash for every purchase you make with your qualifying United MileagePlus® card — up to the maximum earning amount indicated in your email invitation, and on the promotion’s registration confirmation page and confirmation email. To earn in this promotion, you must also spend the specified monthly minimum amount or more during the promotional period. Failure to meet the monthly minimum spend amount will forfeit this TravelBank offer for that month. Purchases posted to your account with a transaction date during the month you register through the calendar month-end are eligible for this offer. Delays by the merchant, such as shipping, could extend the transaction date into the next calendar month or beyond the offer period. ("Purchases" do not include balance transfers, cash advances, traveler's checks, foreign currency, money orders, wire transfers or similar cash-like transactions, lottery tickets, casino gaming chips, race track wagers or similar betting transactions, any checks that access your account, interest, unauthorized or fraudulent charges, or fees of any kind, including an annual fee, if applicable. Returns and refunds will be deducted from purchase amounts.) Please allow 6–8 weeks after each calendar month-end for the awarded TravelBank Cash to appear in your registered MileagePlus account posting back to the last day of the calendar month it was earned in. Each $1 TravelBank Cash issued as part of this promotion is valid through June 30, 2022. TravelBank Cash is valid for air travel purchases on United- and United Express-operated flights, including ticket, taxes and surcharges, and is redeemable on united.com and through the United Customer Contact Center. TravelBank Cash is not valid in conjunction with any other programs (e.g., MileagePlus award redemption). If the full amount in the TravelBank account is not used for a transaction, the balance can be used toward the purchase of another ticket within the original validity period. However, if you close your registered card account during the promotion period, any unawarded portion of TravelBank Cash earned from this promotion will not be issued to your MileagePlus account. To qualify for this bonus offer, account must be open and not in default at the time of fulfillment. If you change credit card products during the promotional period, you can only earn this bonus through the calendar month in which the product change takes effect. This promotional offer is nontransferable and applies only to the account ending in the last four digits referenced in the email. Additional terms may apply. This offer is subject to all of the TravelBank terms and conditions.