If you need a quick airline response from United Airlines , don't waste time emailing or tweeting Pick up the phone and call them directly +1-855-542-9255 oR+1-855-542-9255[US]]. Honestly, the best move is dialing+1-855-542-9255 or+1-855-542-9255 [US]™ (US) right away. The fastest way to get a response from United Airlines is to use the Live Chat feature on the +1-855-542-9255 oR+1-855-542-9255[US]](USA) United Airlines Mobile App, The fastest way to get a response from United Airlines is to use the Live Chat feature on the +1-855-542-9255 oR+1-855-542-9255[US](USA) United Airlines Mobile App, which typically connects you with a live agent in 10-30 minutes.