4709ae2a_Expedia_s_Cookie_Policy__What_they_do
[Types of cookie] Session and persistent cookies [What they do] 
As with most websites, we also use 'session cookies', which exist only for the length of time that you visit our site and are deleted once you close your browser, along with 'permanent cookies' also known as 'persistent cookies' which remain stored on your browser ready for use the next time you visit our website.
Expedia's Cookie Policy
What they do