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$115+ Cheap flights from Islip, NY to Portland, ME (ISP - PWM)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — PWM
Apr 27 — May 41
Sun 4/27
Sun 5/4
1 adult, Economy
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Cheap flight deals from Islip to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Portland (PWM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$263
(Southwest)

One-way from

$115
(Southwest)

Popular in

October

Cheapest in

June

Average price

$241
Provider with most accurate pricing for Islip Long Island-Portland flight deals.
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Provider most trusted by Cheapflights users for Islip Long Island-Portland flights.
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From Islip Long Island to Portland
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One-way flight from Islip Long Island to Portland
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Highest demand for flights based on searches. 41% potential increase in price ($236 potential increase over avg. RT price).
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Cheapest flight prices on average. 13% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Islip to Portland

Cheapest flights from Islip to Portland
Explore the most affordable flight options available from Islip to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

This Southwest deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/296:00 amISP - PWM
1 stop3h 45mSouthwest
Tue 8/55:50 amPWM - ISP
1 stop6h 05mSouthwest
Deal found 4/22$263
This FlightHub deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/87:39 pmISP - PWM
2 stops21h 57mBreeze Airways
Mon 5/126:16 pmPWM - ISP
2 stops18h 59mBreeze Airways
Deal found 4/22$616

Cheapflights Fare Finder

Customize your flight search to find flights from Islip to Portland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 22, 2025.
Use the filters below to find and compare flights from Islip to Portland that are best for you.

Fly from

Islip

Fly to

Portland

Route

Depart

Return

Price

IslipPortland

ISP - PWM

ISPPWM

Islip Long Island

Tue 7/29

6:00 am-9:45 am

1 stop3h 45m

Portland

Tue 8/5

5:50 am-11:55 am

1 stop6h 05m

$263

IslipPortland

ISP - PWM

ISPPWM

Islip Long Island

Thu 5/8

7:39 pm-5:36 pm

2 stops21h 57m

Portland

Mon 5/12

6:16 pm-1:15 pm

2 stops18h 59m

$616

IslipPortland

ISP - PWM

ISPPWM

Islip Long Island

Wed 5/28

8:20 am-1:25 pm

1 stop5h 05m

$115

IslipPortland

ISP - PWM

ISPPWM

Islip Long Island

Tue 6/10

1:55 pm-7:27 pm

2 stops29h 32m

$246

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/21

Compare providers for flights from Islip to Portland

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Portland in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Islip, New York-Portland, Maine flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Portland, Maine flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Portland, Maine flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Islip, New York-Portland, Maine flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Islip, New York-Portland, Maine flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Islip to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Islip with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Islip to Portland

What is the cheapest month to book a flight from Islip, New York to Portland, Maine?

Currently, January is the cheapest month in which you can book a flight from Islip, New York to Portland, Maine (average of $296). Flying from Islip, New York to Portland, Maine in May is currently the most expensive (average of $416). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in Portland by month

Plan your trip to Portland by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portland, Maine ranges from 2.9 - 4.5 inches per month. November is typically the wettest month, when rainfall can reach 4.5 in. August is typically the driest time to visit Portland, Maine when rainfall is around 2.9 in.

Temperature in Portland by month

Plan your trip to Portland by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portland, Maine, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portland. Reviews last updated April 22, 2025.
Breeze Airways
8.1
Very good
158 reviews

Food

6.7

Boarding

8.3

Comfort

8.2

Crew

8.8

Entertainment

6.6

Overall

8.1

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Breeze Airways
8.1
Very good
158 reviews
Breeze Airways
8.1
Very good
158 reviews

Food

6.7

Boarding

8.3

Comfort

8.2

Crew

8.8

Entertainment

6.6

Overall

8.1

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Southwest
8.0
Very good
4,287 reviews
Breeze Airways
8.1
Very good
158 reviews

Food

6.7

Boarding

8.3

Comfort

8.2

Crew

8.8

Entertainment

6.6

Overall

8.1

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!

Related info for your journey

Find useful and relevant information for your journey from Islip to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Islip, New York to Portland, Maine round-trip?

    Currently priced at $263, Southwest will fly you from Islip, New York to Portland, Maine and back. In addition to Southwest, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Breeze Airways for as low as $616. Southwest is currently priced 20% below the average price you’ll pay for this route.

  • Can I find deals for flights from Islip to Portland that include hotel bookings?

    Yes. In addition to deals on Islip to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Islip to Portland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Portland.

  • Can I find deals for business class flights from Islip to Portland?

    Yes. Cheapflights offers flight deals from Islip to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Islip, New York to Portland, Maine?

    Currently, January is the cheapest month in which you can book a flight from Islip, New York to Portland, Maine (average of $296). Flying from Islip, New York to Portland, Maine in May is currently the most expensive (average of $416). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Islip?

Book flights to Islip if you plan to visit one of these locations
North Conway
Bath
Brunswick
Auburn
Conway
Lewiston

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Top 2 airlines flying from Islip to Portland

Discover the top 2 airlines that operate flights from Islip to Portland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Breeze AirwaysCheapest$95Average$125FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$254Average$331FlexibilityNo cancel feeOn-time63%

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