You will get a mixed answer for this question. Sometimes it's a yes and sometimes it’s a no. Some airlines offer cheaper tickets when someone books a flight at the airport. Some airlines offer the cheapest deals when a flight is booked through their official website. However, This airline follows a completely different policy in this regard. If you want to buy cheaper Jetblue tickets or for Jetblue flight booking, then you have to do something different. Jetblue offers cheaper tickets on certain days-  You can book a flight on these days to get a cheaper flight ticket. The websites you book a flight with also plays a vital role in getting a cheaper ticket. If you book a Jetblue flight from Google Flights, then you will get the best deals. You can also try to book a Jetblue Flight with the help of a travel agent and might get a chance to enjoy cheaper flight tickets.