JetBlue's Airways Flight Date Change Policy
However, visitors with a JetBlue travel certificate/voucher are no longer eligible to use the online facility.
What are the steps?
Visitors must follow the airline's official website or mobile app to make changes online.
After logging into the website using your credentials, you will click on the “My Trip” tab to select the flight you want to change.
https://sbsconnect.nyc.gov/for....ums/general-discussi