JetBlue sends an average of 23 surveys out randomly per flight, though the airline makes sure that no one gets more than one survey within 90 days, and gets back a total of 1 million a year.

WSJ: What United, American, Delta, Southwest, JetBlue, Alaska, Virgin America Airlines Learn From Customer Surveys

As it was, when an airline canceled a flight from Point A to Point B, it had no plane available at Point B to fly the scheduled continuation to Point C.

FORBES: Blame Antitrust, Not the Weather, For Travel Woes

But the airline can be as late as it likes or cancel the flight altogether and face no penalty.

FORBES: Airlines should be Subject to their own Rules

So, even though Congress ordered the FAA to issue a rule prohibiting airline flight crews from personal use of electronic devices in the cockpit in January of last year, no rule has been issued to date.

FORBES: FAA Foot-Dragging on Rule to Prohibit Texting and Flying

If the connecting flight is with the same airline then they are duty bound to get you to your final destination but with no guarantee as to time of arrival.

BBC: Q&A: Air passengers' rights

Juneyao recalled a flight out of Shanghai and transferred passengers to another plane after determining there was no safety threat, the airline said in a statement posted to the Twitter-like Sina Weibo microblogging service.

WSJ: Chinese Airlines Receive Flight Threats