Yes, you can cancel your trip on Expedia, but whether you receive a refund depends on the type of booking and the specific cancellation policies of the airline, hotel, or rental company. Fully refundable bookings are more likely to qualify for a refund. For non-refundable bookings, you may receive a credit for future travel. To cancel, log in to your Expedia account, go to "My Trips," and choose the trip you want to cancel. Always review the cancellation terms before booking to know your options.
https://www.devex.com/people/what-is-the-cheapest-day-to-book-on-expedia-1959292