how to upgrade to mint jetblue , is the most frequently asked question. You can switch to Mint JetBlue in a few different ways. Either buy the upgrade at the gate or use the Mosaic Mint upgrade certificate. In conclusion, although this isn't an upgrade, you can use your points to reserve one and cover the difference in value. One of the most luxurious and distinctive travel experiences is JetBlue's business class, sometimes known as Mint Class. Despite their desire to experience the opulence, most patrons are unaware of the precise steps involved. That could be confusing to a lot of passengers. The procedures for upgrading to Mint JetBlue business class are as described below.