Cancellations Chart

 Airline  Cancellation within

  How to cancel
  Notes  Airtran  4 hours
 by phone
 voucher for future travel
 American  Not available
    24 hour hold
 Continental  24 hours
  see 24 hour cancel policy
 Delta You may cancel and refund your ticket in full until midnight, one day after the reservation is made. For example, a ticket for travel originating in the United States purchased anytime on Monday can be cancelled and refunded until midnight on Tuesday. If the reservation is made on the date of travel, you may cancel and refund your paid ticket in full until midnight that day.  by phone or online
  See cancel policy
 JetBlue  Not available
     Southwest  24 hours
 by phone
   United  24 hours
 by phone or online
  see cancel policy
 US Airways
 24 hours
 by phone
see customer service policy
Online travel agency
  Cancellation within
  How to cancel
 Expedia  24 hours
 by phone
Expedia promise
 Orbitz  by 10 p.m. CT day after booking
 online Courtesy cancel
 Priceline  by 11.30 p.m. ET day of booking
 by phone
 Exchange guidance
 Travelocity 24 hours
 by phone
 Travelocity guarantee