JetBlue moved over from American Express to Barclays as issuer of its co-brand credit card in 2016. There’s probably a seven year deal in place expiring late in 2023. But JetBlue is already shopping their co-brand business to Goldman Sachs as they renegotiate with Barclays on an extension.
We rarely see large loyalty programs change issuers. It’s much more likely to see smaller brands with less lucrative products changing hands, which is why JetBlue could move again after just seven years.