https://simpleflying.com/passenger-rights-canceled-flights-guide/
April, 2022
'Laws in every country provide passengers with broad rights in case of airline cancelations, including compensation and refunds. Flight cancelation rights offered by the European Union (which the UK currently follows as well) and the US. The United States does not legally require airlines to provide any compensation for a delayed or canceled service except for a refund.
The only situation where travelers in the US can claim benefits is if they are 'bumped' or unable to fly due to an oversold flight.
When it comes to the EU and UK, benefits are a lot more generous depending on your route and the airline's notification of cancelation. These rights are codified in the EU Directive 261/2004 (EU261), which means airlines must provide these in case of any cancelations'