https://united-air.circle.so/c/say-hello/how-long-does-888-829-1467-it-take-to-get-a-refund-from-united-airlines-after-a-flight-cancellation
After a flight cancellation,**************** typically processes refunds within 7 to 10 business days. However, it may take an additional up to 7 business days for the refund to appear in the passenger's bank or credit card account, depending on the financial institution's processing times.