transitive verb
Definition 1
Make a journey, especially one of some length.
Source: Concise Oxford Dictionary
Context: Gordon Brown travels to Paris and Brussels today for talks designed to save the EU Lisbon treaty.
Source: Financial Times 19/06/2008 (George Parker in London and Ben Hall in Paris)
Definition 2
Of thing (germ, virus) move, extend its radius of action.
Source: Invertext, from Concise Oxford Dictionary
Context: Germs travel from the carrier of the disease to the uninfected person.
Source: scienceclarified.com