Jetblue does not have first class that you can lie down, but they will have it in 6 months, which is called Mint class. ( http://www.dailymail.co.uk/news/article-2439303/JetBlue-announces-new-class-passengers-able-nap-lie-seats-eat-tapas-flight-meal.html).
Just like any airline, you need to be a frequent traveler of that airline to have the opportunity to upgrade.
Just like any airline, you need to be a frequent traveler of that airline to have the opportunity to upgrade.