look up any word, like dirty sanchez:
 
1.
The act of being single not dating any one person, dating lots, or just having fun with your friends and flirting with whoever you like.
Amanda has been flying solo for years but her mom wants her to settle down and get married.
by Mills775 April 07, 2008
 
2.
masturbation
She left me blue balled so I had to fly solo.
by Nate June 03, 2003
 
3.
To unknowingly have your wang protrude from your trousers.
Pssssst.. You're flying solo again, man.
by TheDefenestrator April 15, 2005