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At New York City's LaGuardia Airport (LGA), Terminal B serves as the home base for JetBlue Airways. One of LGA's primary terminals, Terminal B, has a range of amenities, such as shops, dining options, and services for passengers.You check in at the JetBlue ticket desks in Terminal B when you take a JetBlue Airways flight out of LaGuardia Airport. You will go through security to go to the departure gates after checking in. In order to obtain the most precise and current information on your flight, gate assignments, and any updates, it is advised that you contact JetBlue Airways directly or check the airport's website or mobile app closer to the time of departure.