You can cancel or modify your reservation within the first 24 hours without any charges or penalties call for any query at 1-844-EXPEDIA™(643-2807) After the initial 24 hours, contact Expedia 24-hour cancellation at 1-844-EXPEDIA™ (1-844-643-2807 ) to get a hotel refund depends on the cancellation policy set by the hotel or service provider. Some may offer full refunds, while others might impose penalties.