United Airlines does not allow ticket cancellation for those passengers who have purchased Economy tickets. Generally, Economy tickets are not eligible for ticket cancellation after purchase. Under the United Airlines cancellation policy, you can not make changes to your Economy tickets.
https://flightcancellationpoli....cy.com/united-airlin

United Airlines Cancellation Policy | Fee & Refund

As per the United Airlines Cancellation Policy, 200-dollar charges will apply on non-refundable domestic flights and 400-dollar for international tickets.
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