Related Clues:

• It's heard from one taking off
• It's heard while leaving
• ''See ya!''
• Cheerio
• Bye-bye
• "So long!"
• It's said when taking off
• 'See you later!'
• Ciao cousin
• 'I'm history!'
• 'S'long!'
• "Gotta be going!"
• "Good-bye, old chap!"
• So long
• "Later"