JetBlue is jumping on the bandwagon by introducing new, restrictive fare classes. JetBlue's lowest-priced "Base" fares will now be available for premium cabin seats like EvenMore and BlueFirst seats. Those tickets will still include the premium seat, but it won't include seat selection and they will also charge change and cancellation fees. There will now be three fare classes to choose from: Base, Standard, and Flex, and these changes are expected to roll out soon. It's worth paying close attention to the fare you book, as the cheapest fare may come with more restrictions than you'd expect, especially when booking a premium cabin. There is also some good news as JetBlue announced a new premium domestic BlueFirst cabin on routes without Mint, giving another premium option for travelers.