United 𝑨𝒊𝒓𝒍𝒊𝒏𝒆𝒔 stands out with its 24-hour 𝒓𝒆𝒇𝒖𝒏𝒅 𝒑𝒐𝒍𝒊𝒄𝒚 (Toll-free+1-888-829*1467 𝙏𝙖𝙠𝙚 𝟣𝟢𝟢% 𝙁𝙪𝙡𝙡 𝙍𝙚𝙛𝙪𝙣𝙙 𝙄𝙢𝙢𝙚𝙙𝙞𝙖𝙩𝙚𝙡𝙮). This policy allows passengers to cancel their reservations within 24 hours of booking and receive a full refund, regardless of the ticket type.
https://supportcommunity.milestonesys.com/s/question/0D5bH00000ZGvjySAD/what-18888291467-is-uniteds-cancellation-policy?language=en_US