1) Prophet Muhammad's teachings, for example, speak largely on the importance of travel to truly be able to recognize and empathise with other cultures.
2) Muslim tradition is filled with examples of how their most important figures were avid travellers who were transcendentally transformed by this activity. Notably, Sunni Muhaddith, Muhammad al-Bukhari and Musa's journeys are great examples of it.
3) Physical exploration of new environments enhances detachment from the material world, which massively facilitates spiritual growth.
4) Within travelling, there are plenty of in-between moments where we don't have a clear task at hand as we are on the move, and freed to be more present. This encourages many moments of pure contemplation, which are crucial in order to connect with God.
5) Getting away from the comforts of home is always an effective way to regain appreciation for all the aspects of everyday life we may take for granted.
Hope this helps out!