Can I keep the website I already have and just add a booking engine to it?

Yes, in most cases you can keep the website you already have and simply add booking to it. The usual way is to give your existing site a new page, or a small search box on the home page, that carries your visitor into the booking engine. The look, the colours and your logo can be set up so the two feel like one website to your customer, even though the search and payment part is doing the heavy work behind the scenes.

How smooth this feels depends on how your current site is built. If it runs on a common website builder or a content system, adding a search box or a link is usually straightforward and your own web person can do it in an afternoon. If your site is older, or was built in an unusual way, you may only be able to link out to the booking pages rather than place the search box inside your existing design.

There are a couple of things worth knowing before you decide. Your booking pages may sit on a separate address, such as a sub domain of your own name, and search engines can treat that as a separate site. Payment, refunds and supplier rules still apply in the same way as they would on a full portal, because that side is set by your suppliers and your plan, not by where the search box sits.

The best next step is to check what you are able to edit on your home page, or ask whoever looks after your website, and then we can tell you whether a built in search box or a linked booking section suits you better.