Will my portal show up on Google when people search for flights, or do I have to pay for ads to get anyone to it?

Yes, your portal can show up on Google, but it will not happen by itself and it normally takes months rather than days. What Google reads and ranks is the written content on your site, so the parts that help you are your homepage, your about and contact pages, and any pages or articles you add about the destinations, routes and services you actually sell.

The live search results your customers see are a different matter. Those pages are produced fresh each time somebody runs a search, and the fares change all day, so search engines generally do not list them. That means you should not expect your portal to appear simply because it can quote thousands of flights. The visibility comes from the pages you write yourself and from how well your site is set up, including the page titles and descriptions, a clean web address, and a site that loads properly on a phone.

How quickly you rank depends on things outside anyone's control, such as how long your web address has been live, how much content you publish, and how competitive your market is. Whether you can add and edit your own pages and control page titles may also depend on your plan, so it is worth confirming that before you build a content plan around it. No honest provider can promise you a position on Google.

In the meantime, most agencies get their first bookings from their existing customers, social media, WhatsApp and paid ads, and let the organic traffic build alongside. A good next step is to check what content pages your plan lets you create, choose a web address you intend to keep for years, and write a handful of useful pages about the destinations you genuinely sell.