https://www.siliconvalley.com/2024/03/28/why-do-airlines-charge-so-much-for-checked-bags-this-obscure-rule-helps-explain-why/

Five out of the six biggest US airlines have raised their checked bag fees since January 2024.

Take American Airlines. In 2023, it cost $30 to check a standard bag in with the airline; today, as of March 2024, it costs $40 at a US airport – a whopping 33% increase.