JetBlue's Blue Basic cannot be changed or cancelled after the 24-hour window. No seat selection (assigned at check-in), last boarding group, and no same-day changes. Only buy Blue Basic if certain of your plans.
JetBlue Mint is available on transcon routes (JFK-LAX, JFK-SFO) and international. Upgrades from economy to Mint can be purchased with TrueBlue points or cash. Mint Suite seats (on A321LR) are private suites with closing doors.
Even More Space seats have 38–41" of legroom vs. standard 32–34". They also include early boarding. Available from $10–$80 per segment depending on route. Front rows and exit rows are typically Even More Space.
TrueBlue Points for Upgrades
TrueBlue points can be used to book any JetBlue fare including Mint. Points redemptions are based on the cash price of the ticket. There are no blackout dates and points can be pooled with family members.