Yes, JetBlue allows passengers to select their seats in advance when booking flights. This seat selection option can be accessed during the booking process on the JetBlue website or through their app. Passengers who choose to select their seats typically have the choice of various seating options, ranging from standard seats to more spacious options, depending on availability. Additionally, for passengers with a JetBlue Plus or Mint fare, seat selection usually comes included as a complimentary feature. It is important to note that if a passenger does not select a seat in advance, JetBlue will automatically assign a seat at check-in. For the most current policies and details regarding seat selection, it is advisable to visit the JetBlue website. This will provide you with the most accurate and up-to-date information regarding seat selection and related fees.