Finding the absolute cheapest day to fly on JetBlue can vary based on routes and demand, but generally, midweek flights (Tuesdays and Wednesdays) tend to offer better deals. Airlines often release discounted fares early in the week, and these days are less popular for travel, helping you secure lower prices. However, always compare prices and consider factors like holidays and special events, as they can influence ticket costs. Flexibility with your travel dates and booking well in advance can also contribute to finding more budget-friendly options on JetBlue. To get the best deals, utilize fare comparison websites and sign up for fare alerts to stay updated on price drops and promotions.