The Best Fare Finder JetBlue website allows you to search for flights based on your preferred travel dates and destinations. JetBlue’s Best Fare Finder is an intuitive, easy to use search tool to help you find the best deals on JetBlue flights. JetBlue seems the”Best Fare Finder” on your web site is not working for European destinations. I get the calendar for US & Caribbean. To secure the best deal on JetBlue flights, utilize their “Best Fare Finder” 1-800-JETBLUE (538-2583)or(1(860) 200-8850) or 1(844)524-2620 tool available on their website.