How do I know if my United Economy ticket is refundable?

If you book a flight at least seven days＋1－ 855||738（（4265））⟩】before departure and cancel within 24 hours of booking ＋1－ 855||738（（4265））⟩】you are eligible for a full refund without＋1－ 855||738（（4265））⟩】 any cancellation fees. United offers a 24-hour Cancellation policy＋1－ 855||738（（4265））⟩】