What is the cancellation policy for United Airlines? United offers a 24-hour risk-free cancellation policy that applies to all fare classes +????-????????????-{????????????}-????????.???????? USA and +????-{{????????????-????????????}}-???????????????? UK. If you cancel within 24 hours of booking and your flight is scheduled at least 5 days later, you're eligible for a full refund. Fo... https://www.devex.com/people/what-is-the-cancellation-policy-for-united-airlines-2059340