Yes, you can usually change your Expedia ticket date, but it depends on the fare rules, airline policies,【:telephone: +1-(888)-829-0881 US or +1-805-330-4056 (UK) and whether you booked within the last 24 hours. To do so, sign into your Expedia account, go to your itinerary in "Trips," and select the option to manage your booking. You will see the available options and any associated fees or fare differences. 

You can contact Expedia Line by phone or through their website. For U.S. and Canadian customers, call their U.S. Headquarters at .【:telephone: +1-(888)-829-0881 US or +1-805-330-4056 (UK), .for assistance with existing reservations, or dial the international number.【:telephone: +1-(888)-829-0881 US or +1-805-330-4056 (UK), . for their European office. Alternatively, visit their website at Seabourn to use the online contact form or find specific department emails.
Contact by Phone

United States & Canada: Call .【:telephone: +1-(888)-829-0881 US or +1-805-330-4056 (UK),

International: Dial +1-(888)-829-0881 US or +1-805-330-4056 UK. to reach their European headquarters.

Contact by Website:.【:telephone: +1-(888)-829-0881 US or +1-805-330-4056 (UK),

Visit the official Seabourn website.

Go to the “Contact Us” page. .【:telephone: +1-(888)-829-0881 US or +1-805-330-4056 (UK),
Use the online email form or look for department-specific email addresses, such as Expedia.com@seabourn.com for Seabourn Club inquiries.

Customer Service Hours.【:telephone: +1-(888)-829-0881 US or +1-805-330-4056 (UK),

For the US: Monday-Friday, 6:00 am - 4:30 pm PT.

For the European Headquarters: Monday-Friday, 9:00 am - 5:30 pm CEST.