How to Complain to United Airlines | Frommer's
https://www.frommers.com/tips/airfare/how-to-complain-to-united-airlines
WebTo complain to United, email Customer Care through the compliments/complaints form, or call and leave a message at 877/624-2660. Prefer to write strongly worded letter? Write to Customer Care at United Airlines, Inc., 900 Grand Plaza Drive NHCCR, Houston, TX 77067-4323. Be sure to have your ticket number and trip details handy. Air Travel.
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