$143 Cheap JetBlue Airways flights West Palm Beach (PBI) to Nantucket (ACK)

Finding cheap one-way JetBlue Airways flights from PBI to ACK from $143 on Expedia couldn't be simpler — just filter by "Price (lowest to highest)." Or check out our affordable round-trip fares from $274 for your next exciting getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Begin your search one to three months before your departure to get cheaper fares on JetBlue Airways flights from Palm Beach Intl. Airport (PBI) to Nantucket Memorial Airport (ACK). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Nail your timing, and you can enjoy significant savings on domestic flights.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

To find the earliest departures from PBI to ACK with JetBlue Airways, sort your results by "Morning" and "Early Morning." Booking an early flight usually means cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.