Originally Posted by
guv1976
As long as they are marketed by AA with an AA flight number, the credits should be useable.
Here is a $39 EWR-BOS on JetBlue:
https://www.google.com/travel/flight...pRZRIGCAEQABgA
However, I cannot see how to book the Blue Basic fare on AA.
You can, however, book it for $69 on AA as AA9268 operated by JetBlue, which is still a good deal.