To book a flight with JetBlue Airways, visit their website or mobile app. Enter your travel details including dates, destinations, and number of passengers. Browse available flights and select your preferred itinerary. During the booking process, you'll reach the "JetBlue Airways Flight Booking" step where you can choose your seat and any additional services. Review your selection and proceed to payment. After completing the reservation, you'll receive a confirmation email with your itinerary.