"4.7 JetBlue's Flight Terms and Conditions and Getaways Terms and Conditions (including but not limited to change/cancel policies and fees) apply to Award Flights and Award Getaways, respectively. In the event a Member cancels Award Travel, Points will be re-deposited to the Member's Account. Points used to purchase the Award Flight or Award Getaways will be automatically forfeited if a passenger does not cancel prior to scheduled departure."

https://trueblue.jetblue.com/web/tru...and-conditions

"Any change or cancellation to your Award Flight booking is subject to the JetBlue standard change and cancellation fees and policies, available here."

https://www.jetblue.com/legal/fees/