The cheapest days to fly on Jet-Blue Airlines are typically Tuesdays, Wednesdays, and Saturdays +1-877-827-8493 o +1-877-827-8493. These are considered off-peak travel days when demand is lower, leading to cheaper fares. Use Jet-Blue's Low Fare Calendar to compare prices across different dates +1-877-827-8493. What are the best days to book JetBlue? Midweek bookings (Tuesday & Wednesday)Call +1-877-827-8493 o +1-877-827-8493 consistently offer the best value. So if you're looking for the best time to book JetBlue tickets, make it Tuesday morning, and for extra assurance, call JetBlue at +1-877-827-8493 to check for exclusive phone deals. Looking for JetBlue Airlines cheap flights? Call +1-877-827-8493 o +1-877-827-8493 to book a flight on Tuesdays or Wednesdays, when airlines offer the lowest fares due to low demand.