HANDY PDF OF FLIGHT DELAY AND CANCELLATION POLICIES FOR UNITED STATES AIRLINES

Below is a link to the official PDF from the US Department of Transportation Airline Customer Service Dashboard listing what airlines are responsible for (rebooking flights, accommodations, meal vouchers) when there is a flight delay or cancellation within their control.

Good luck out there!

https://www.transportation.gov/sites/dot.gov/files/2022-09/Airline_Customer_Service_Commitments_September_1_2022.pdf