For flights, yes — Expedia follows the U.S. DOT rule that lets you cancel within 24 hours of booking for a full refund, provided your flight is at least 7 days away. Hotels may also offer 24-hour cancellation windows, but policies vary by property. Always check your booking confirmation for details. To confirm whether your trip qualifies for the 24-hour free cancellation and process it quickly, call 866-204-0803 and an Expedia agent will assist.