O-ticket Share definition Flag The ticket you thought was to Ontario, Canada that actually took you to Ontario, California. (Or any other such mix-up). I meant to go to Disney World, but guess I bought a an O-ticket to Disneyland instead O-ticket by Tweedle Dee September 18, 2012 0 0 Get merch Get the O-ticket mug. Buy Now — $32.95 See more merch