Does Expedia have a 24 hour refund policy?
https://community.expensify.com/discussion/27346/does-expedia-have-a-24-hour-refund-policy/p1?new=1
Yes, Expedia provides 24 hours cancellation and refund policy +1-855-723-36'66. You can cancel a flight within 24 hours of booking and receive a full refund from Expedia at +1-855-723-36/66.