Originally Posted by
jerry90210
Also when you pay for the Blue Fare online when you buy the ticket, when you check in with Jetblue, they will check one of your checked bags. But they will then put a tag on your carry on to confirm you paid for the carry on right? So when you are getting ready to board, if they see you have that tag on your carry on, they won't say anything? But if you don't have a tag and the bag looks sort of big, then they will measure it? Can you confirm this part.
On most routes, you will still have to pay to check a bag on a Blue fare. (JFK-LON is an exception; there might be others.)
Blue Basic passengers get boarding passes marked to alert the gate agent that carry-ons are not permitted. On a regular Blue fare, the boarding pass will not have that language, so the carry-on will be allowed; no bag tag needed for a permitted carry-on.
This is discussed in Posts 45 and 46, upthread.
Also, when you buy a Blue fare, you are not paying for a carry-on; you are paying for a fare that
permits a carry-on.