I own a Travel Agency company and we have built this Website through Wix.com. Now, We want to embed an add-in for the user to search airlines and book it (like Expedia). What should I do?
Wix supports a mulitude of APIs to used for various fetch calls for your web pages.
If you already have to API's in mind you can venture off within you WIX code to integrate within your application's processes.
There shouldn't be any complications getting this done.
Please see the link below for more information