What are the steps for Jetblue web check in? Use the instructions provided to check in online for your JetBlue flight. You should check in online at least 24 hours before your departure time, if not more. By doing this, you'll make sure you have enough time to finish checking in and making any required adjustments to your reservation.
https://www.airfleetrating.com/check-in/jetblue-check-in-policy/