To use JetBlue's Best Fare Finder, follow these steps:

Visit the JetBlue website: Open your web browser and go to the official JetBlue website at www.jetblue.com.

Select "Flights": On the homepage, you will find a search form where you can input your travel details. Enter your departure city, destination, departure date, and return date (if applicable). Then, click on the "Flights" button to proceed.

Find the Best Fare Finder: On the search results page, you will see various flight options based on your input. Look for the "Jetblue Best Fare Finder" option, usually located above or below the search results. Click on it to access the feature.

Explore the Best Fare Finder: The Best Fare Finder tool will display a calendar with different dates and corresponding fares. It allows you to find the lowest available fares within a specified timeframe. You can select the departure and return dates using the calendar.

Adjust your search: If you have flexible travel dates, you can use the arrows or navigation buttons in the calendar to explore different months or weeks. This way, you can compare prices and find the most affordable options. You can also select one-way or round-trip flights depending on your needs.

View the fares: As you adjust the dates, the Best Fare Finder will update the displayed fares. Take note of the prices for different dates and choose the ones that suit your budget and travel preferences.

Select your flight: Once you've found a suitable fare, click on the corresponding date. The Best Fare Finder will redirect you to the flight selection page where you can review the available flights for that particular date.

Complete your booking: Choose your desired flight from the options provided, review the details, and follow the prompts to complete your booking. Make sure to enter the required passenger information and payment details accurately.

Remember that fares are subject to availability, and prices may vary based on demand and other factors. It's advisable to book your flight as soon as you find a favorable fare to secure your reservation.

If you encounter any issues or need further assistance, you can contact JetBlue's customer support for guidance.