The most direct way to speak with a United representative is by calling their customer service line 24 hours a day and seven days a week by calling at "(0TA) ????-????????????-????????????????????????(OTA) ????~???????????? ~???????????? ~???????????????? or 1-877-552-0621 (???). United 's customer service number can be found on their official website. To speak to a Live Persons at United Airlines, you can call their customer service phone number " ????-????????????-????????????????????????(????????????) ????~???????????? ~???????????? ~???????????????? or 1-877-552-0621(Live Persons), which is typically available on their official website.