Some airlines still call it “Rule 240” and others a “contract of carriage” but no matter what the name, it still means the same thing: power to the traveler. But which airlines still use it and how much does it protect a traveler?
If your flight is canceled or you’re given a wrong connection, the airline might have to put you on another flight for free, even if it’s on another airline. Airfarewatchdog blog has put together a handy table to help you tell which airlines follow these procedures, and to what degree. They also have links to the contracts of carriage for the airlines that have them posted online. Handy to check if you’re covered before booking, and also good to print out and bring with you to the airport just in case you need to invoke your rights and the airline employee has forgotten their own policies.
Rule 240 Revisited [Airfarewatchdog Blog]