The sponsored TLD .travel is one of the top-level domains managed by Dog Beach, LLC. .travel is supported by Name.com. While the TLD is also supported by other registrars, I've chosen only to include registrars that I trust and use myself. If you use a trustworthy registrar, then you can expect the lowest yearly cost to be about $99, while the registrar often offer a first-year discount at $44.99.
Be sure to check out the domain name finder tool, which allows you to look up the availability of hundreds of domains in seconds while discovering domain names you never thought of.
If you're looking to host a website then you can get $100 free DigitalOcean credits here.