Flagstar Bank official phone number
Find the official Flagstar Bank phone number listed for Banking, online, and loan support. Confirm the company's source page before sharing information or starting a call.
Public U.S. number listed on the source
1-888-248-6423
This number was visible on the linked official source when it was checked on October 17, 2026. Phone numbers and departments can change, so use the source link below to confirm it before calling. A source check cannot establish who is calling you.
Open Flagstar Bank official sourceSource and department details
- Department or route
- Banking, online, and loan support
- Source checked
- October 17, 2026
- Latest listing review
- October 17, 2026 — phone confirmed on the official source.
Evidence from the official source
Banking, online, and loan support: Get questions answered about your accounts, as well as online and mobile banking. 888-248-6423.
For account questions and online and mobile banking. The official page also provides separate mortgage and other specialized contacts.
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