another way to say "traveling alone" is flying solo

A universal sayings is; “It is better to travel alone than with a bad companion”.

Tlovely, --The man who goes alone can start today; but he who travels with another must wait till that other is ready. Henry David Thoreau Down to Gehenna, or up to the Throne, He travels fastest who travels alone. --Rudyard Kipling In America, there are two classes of travel: First class, and with children. --Robert Benchley He who would travel happily must travel light. -- Antoine de St. Exupery To awaken alone in a strange town is one of the pleasantest sensations in the world. —Freya Stark I have found out that there ain't no surer way to find out whether you like people or hate them than to travel with them --Mark Twain Two roads diverged in a wood and I – I took the one less traveled by. — Robert Frost BUT Good company in a journey makes the way seem shorter. -- Izaak Walton A journey is best measured in friends, rather than miles. -- Tim Cahill