$43 Cheap Flights from Islip (ISP) to West Palm Beach (PBI)

View $43 flight on Sun, May 18, 2025Opens in a new window

Popular airlines from MacArthur Airport (ISP) to Palm Beach Intl. Airport (PBI)

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Cheap Flights from Islip to West Palm Beach (ISP-PBI)

Prices were available within the past 7 days and start at $43 for one-way flights and $86 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Tue, May 13 - Tue, May 20
ISP
Islip
PBI
West Palm Beach
$86 Roundtrip, found 4 hours ago
$86
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Tue, May 13 from Islip to West Palm Beach, returning Tue, May 20, priced at $86 found 4 hours ago
Frontier Airlines
Tue, May 20 - Tue, May 20
ISP
Islip
PBI
West Palm Beach
$88 Roundtrip, found 1 day ago
$88
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, May 20 from Islip to West Palm Beach, returning Tue, May 20, priced at $88 found 1 day ago
Frontier Airlines
Thu, May 29 - Sun, Jun 1
ISP
Islip
PBI
West Palm Beach
$90 Roundtrip, found 4 hours ago
$90
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Thu, May 29 from Islip to West Palm Beach, returning Sun, Jun 1, priced at $90 found 4 hours ago
Frontier Airlines
Thu, Jun 5 - Sun, Jun 8
ISP
Islip
PBI
West Palm Beach
$92 Roundtrip, found 2 hours ago
$92
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Thu, Jun 5 from Islip to West Palm Beach, returning Sun, Jun 8, priced at $92 found 2 hours ago
Frontier Airlines
Sat, May 17 - Tue, May 20
ISP
Islip
PBI
West Palm Beach
$93 Roundtrip, found 5 hours ago
$93
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Sat, May 17 from Islip to West Palm Beach, returning Tue, May 20, priced at $93 found 5 hours ago
Frontier Airlines
Tue, May 13 - Sat, May 17
ISP
Islip
PBI
West Palm Beach
$98 Roundtrip, found 5 hours ago
$98
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Tue, May 13 from Islip to West Palm Beach, returning Sat, May 17, priced at $98 found 5 hours ago
Frontier Airlines
Tue, Jun 24 - Tue, Jul 1
ISP
Islip
PBI
West Palm Beach
$106 Roundtrip, found 5 days ago
$106
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Tue, Jun 24 from Islip to West Palm Beach, returning Tue, Jul 1, priced at $106 found 5 days ago
Frontier Airlines
Sat, May 17 - Tue, May 20
ISP
Islip
PBI
West Palm Beach
$108 Roundtrip, found 5 hours ago
$108
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Sat, May 17 from Islip to West Palm Beach, returning Tue, May 20, priced at $108 found 5 hours ago
Frontier Airlines
Thu, May 15 - Sat, May 17
ISP
Islip
PBI
West Palm Beach
$108 Roundtrip, found 12 hours ago
$108
Roundtrip
found 12 hours ago
Select Frontier Airlines flight, departing Thu, May 15 from Islip to West Palm Beach, returning Sat, May 17, priced at $108 found 12 hours ago
Frontier Airlines
Sun, May 18 - Thu, May 22
ISP
Islip
PBI
West Palm Beach
$109 Roundtrip, found 1 day ago
$109
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sun, May 18 from Islip to West Palm Beach, returning Thu, May 22, priced at $109 found 1 day ago
Flights from Islip (ISP) to West Palm Beach (PBI)
Origin airport
MacArthur
Destination airport
Palm Beach Intl.
Airlines serving
Breeze Airways, Frontier Airlines, JetBlue Airways, Southwest Airlines
Roundtrip price
$86
Distance
1052 mi

Islip to West Palm Beach Flights

The cheapest times to fly from Islip to West Palm Beach

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Islip to West Palm Beach are during the month of May. You can find some of the cheapest flights from Islip to West Palm Beach with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Islip to West Palm Beach

Sunday is one of the best days to book for cheap flights from Islip to West Palm Beach: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Islip to West Palm Beach

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Islip to West Palm Beach in 2025. You can also book with separate airlines for your outbound and return journeys, from $43 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Islip to West Palm Beach flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Islip to West Palm Beach airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from MacArthur Airport (ISP) to Palm Beach Intl. Airport (PBI) cost?
Score affordable return tickets from MacArthur Airport (ISP) to Palm Beach Intl. Airport (PBI) starting at $88. Grab your seat and be on your way. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Frontier Airlines flight leaving ISP on May 17 2025 and touching down at PBI. The price was last updated on April 29 2025 and has not changed since.
What is the cheapest month to fly from ISP to PBI?
Look for direct flights from ISP to PBI in May to score cheaper tickets. You can find a one-way Frontier Airlines flight for $44 leaving on May 25 2025. This price is based on the cheapest direct flight found on Expedia for this route in the next 330 days. The price was last updated on April 29 2025 and remains unchanged.
Which airlines fly direct from MacArthur Airport (ISP) to Palm Beach Intl. Airport (PBI)?
Select from 3 carriers that fly direct from MacArthur Airport (ISP) to Palm Beach Intl. Airport (PBI). These include:

  • Southwest Airlines
  • Frontier Airlines
  • JetBlue Airways

What is the cheapest airline that flies from ISP to PBI?
Book a flight from ISP to PBI with Frontier Airlines. This airline currently has the cheapest one-way fare for this route, starting at $44. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from ISP on May 25 2025. Prices were last updated on April 29 2025 and have not changed since.
How many flights per day from MacArthur Airport (ISP) to Palm Beach Intl. Airport (PBI)?
With an average of 3 direct flights that operate from MacArthur Airport (ISP) to Palm Beach Intl. Airport (PBI) daily, you’ll be cruising above the clouds before you know it.
What are the most popular departure times for flights from MacArthur Airport (ISP) to Palm Beach Intl. Airport (PBI)?
The 6 AM departures from ISP to PBI are the busiest. These flights can come with a higher price due to their popularity. If you’re looking to save, book during off-peak hours.
What day of the week has the most flights from ISP to PBI?
If you jet off on a Friday, you’ll get the widest range of options for flights from MacArthur Airport (ISP) to Palm Beach Intl. Airport (PBI).
What is the earliest flight from MacArthur Airport (ISP) to Palm Beach Intl. Airport (PBI)?
Catch the earliest flight at around 6:30AM UTC-5, leaving from MacArthur Airport (ISP). You’ll be in the air for about 3h 11m, arriving at Palm Beach Intl. Airport (PBI) at approximately 9:41AM UTC-5.
How long does it take to fly from MacArthur Airport (ISP) to Palm Beach Intl. Airport (PBI)?
Typically, it takes 3 hours and 4 minutes to cover the 1,050 mi from ISP to PBI.
What is the best time to fly from MacArthur Airport (ISP) to Palm Beach Intl. Airport (PBI)?
Opt for a flight from MacArthur Airport (ISP) to Palm Beach Intl. Airport (PBI) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for West Palm Beach from MacArthur Airport (ISP)?
If you’re catching a direct flight from MacArthur Airport (ISP) to West Palm Beach, you can touch down at either Palm Beach Intl. Airport (PBI) or Fort Lauderdale - Hollywood Intl. Airport (FLL).
Is it cheaper to buy a plane ticket from MacArthur Airport (ISP) to Palm Beach Intl. Airport (PBI) last-minute?
Last-minute fares from ISP to PBI are generally more expensive. To lock in the best prices, start looking for flights ahead of time. That being said, if you’re flexible with your travel plans, it’s possible to land a cheap fare right before your trip.
Is it cheaper to book an ISP to PBI flight and hotel package?
You’ll generally save money by securing an ISP to PBI flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s easy to manage it all in one place. Once you’ve chosen your ideal accommodations and flights, you can add extras like car rentals, activities and tours.
Can I cancel or change the date of my flight from MacArthur Airport (ISP) to Palm Beach Intl. Airport (PBI)?
In most cases, you can reschedule or cancel your ISP to PBI flight. However, there may be additional fees, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline’s fees and guidelines on flight changes, or if you’d like more information, go to our Customer Service portal.

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*Available to One Key members.