If you want to fly to multiple destinations with the cheapest of fares, book a JetBlue multi-city flight through the online website or phone number.
To book multi-city flights on JetBlue, follow these steps:

Go to the JetBlue website and click on the "Book" tab.

Select the "Multi-city" option under the "Flight" tab.

Enter your departure city, destination city, and travel dates for each leg of your trip.

Choose the number of passengers and class of service.

Click on the "Search Flights" button.

Review the available flight options and choose the flights that best suit your schedule and budget.

Enter the required passenger information and any additional travel preferences.

Review your itinerary and confirm your booking.

It's important to note that booking multi-city flights may involve different fares for each leg of your trip and may result in a higher total cost than booking a round-trip or one-way ticket. However, JetBlue offers flexible fare options and the ability to earn and redeem TrueBlue points for multi-city bookings.