comply with The following options are available for changing your JetBlue flight reservation:
You can Modify your flight ticket if you bought it directly from JetBlue:
Using Manage Trips online
(retrieve your flight and follow the prompts to change it)
Make direct touch with the travel agency if you bought your ticket there.
if you wish to modify an award ticket.
You must first cancel it online
next speak with TrueBlue directly.
Note: If you cancel an award ticket, your TrueBlue points will be refunded to your account, and any money you paid with cash, a check, or a credit card will be credited to your JetBlue Travel Bank account for use before the expiration date (usually 12 months from the original date of issue).