There are a few ways to monetize a travel blog. One way is to sell advertising space on the blog. This can be done through Google Adsense, or other ad networks. Another way to monetize a travel blog is to sell tour packages or other services through the blog.
This can be done through affiliate programs, or by selling products directly through the blog. Finally, a travel blog can make money by selling digital downloads, such as e-books, or through sponsorships from businesses interested in promoting their products or services through the blog.