WordPress is not only a blogging platform anymore. It’s an awesome CMS(Content Management System). With these following free and premium themes you can setup a website for your travel agency.
Free Travel WordPress Themes
International Travel
Download | Demo
Listen to the Wild
Download | Demo
 Cruise Theme (Free)
Download | Demo
 Euro Travel Theme
Download | Demo
 Tropical Island
Download | Demo
 Authorship Travel Theme
Download | Demo
Premium Travel WordPress Themes
 WP World Traveler
Download | Demo
Paper Plane
Download | Demo
Traveling
Download | Demo
Hotel Booking
Download | Demo
Lifestyle Theme
Download | Demo