Cheap flights from Portland to Islip (PWM - ISP) from $573

This is the cheapest one-way flight price, found on 10/3. Prices may vary by date and flight preferences.
Oct 8 — Oct 151

How far in advance should I book a flight from Portland, Maine to Islip?

Travelers have found it’s best to book a flight 59 days in advance to save up to 50% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 59 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Portland, Maine to Islip 1-2 weeks in advance for as low as $248, or $321 for flights within the next 24 hours.

What is the cheapest month to fly from Portland, Maine to Islip?

The best pricing can be found in the month of September. Prices to Islip from Portland, Maine average $236. You can even find prices in September for less than $236, as users have found deals to Islip from as low as $117. The month of November appears to be one of the more expensive times to travel to Islip from Portland, Maine. Flying in the targeted month can save you up to 21%.

When is the cheapest time to fly from Portland, Maine to Islip (PWM - ISP)?

When flying from Portland, Maine to Islip, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap Portland to Islip flights in October & November 2023

The best prices found for PWM to ISP flights for October, November

Portland to Islip 2023 flight deals

Cheap flights to Islip from Portland found for this year

Related info for your journey

Useful info, stats and facts about Portland to Islip flights.

What does PWM to ISP mean?

PWM and ISP are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. PWM to ISP refers to a flight route from Portland Airport to Islip Long Island Airport.

Top airline flying from Portland to Islip

The chart below displays the airlines Cheapflights users traveling from Portland to Islip choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Breeze AirwaysCheapest$82Average$103FlexibilityNo cancel feeOn-timeN/A
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When you search for this flight from Portland to Islip, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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Cheapflights helps you find that perfect flight to Islip from Portland by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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Users can book flights with no change fees policies with our dedicated filters. Book flights from Portland to Islip flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Portland to Islip become cheaper?

Yes, Cheapflights has a feature called Price Alert, which essentially offers users the ability to be notified when flight prices change. Track prices for your flight to Islip from Portland today and book when you’re ready!

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