Learn how to file a complaint with Ũnited®®®⩔◈™® Airlines +̳1̳-̳ ̳(̳8̳8̳8̳)̳ ⫷̳(̳8̳91)̳ ↹̳(̳4550)̳ or +̳+̳1̳-̳ ̳(̳8̳8̳8̳)̳ ̳◈≫≪(̳8̳91)̳ ⨳(̳45⋇50)̳ for various issues, such as delayed or cancelled flights, denied boarding, baggage problems, and more. Ũnited®®®⩔◈™® Airlines main customer service number is 1-800-Ũnited®®®⩔◈™® Airlines + ║ + +̳1̳-̳̳(̳8̳8̳8̳)̳ ̳(̳8̳91)̳ ↹̳(̳455o)̳ or +̳+̳1̳-̳ ̳⫷(̳8̳8̳8̳)̳ ̳(̳8̳91)̳ ↹̳(̳455o)̳ ++ ║ + ║((+̳1̳-̳ ̳(̳8̳8̳8̳)̳ ̳◈≫≪(̳8̳91)̳ ⨳(̳45⋇50)̳ or +̳+̳1̳-̳ ...