What is the cheapest airline that flies from Islip Long Island to Portland?

Breeze Airways and Southwest are the most popular carriers operating from Islip Long Island to Portland

What airlines fly to Portland, Maine?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Portland, Maine from Islip, New York according to our data. United Airlines is the first choice among our users, with 61% of people opting to fly with this airline when traveling to Portland, Maine. Keep in mind that there are 5 different airlines that fly to Portland, Maine on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Islip Long Island Airport to Portland Airport?

Prices for flights from Islip Long Island Airport to Portland Airport were last updated today.

How old do you have to be to fly from Islip Long Island Airport to Portland Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Islip Long Island Airport to Portland Airport.

What documentation or ID do you need to fly to Portland Airport?

The required travel and health documents for your Portland Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Portland Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$140 Cheap Flights from Islip, New York to Portland, Maine in 2026/27

Find the cheapest flights from Islip, New York to Portland

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:05 am - 9:50 amISP Islip Long Island-PWM Portland

3h 45m1 stop Baltimore/Washington

10:25 am - 4:15 pmPWM Portland-ISP Islip Long Island

5h 50m1 stop Baltimore/Washington

$305Southwest

Thu, Dec 3 - Tue, Dec 8

4:05 pm - 9:45 pmISP Islip Long Island-PWM Portland

5h 40m1 stop Baltimore/Washington

11:10 am - 5:05 pmPWM Portland-ISP Islip Long Island

5h 55m1 stop Baltimore/Washington

$336Southwest

Thu, Dec 10 - Sun, Dec 13

6:30 am - 2:45 pmISP Islip Long Island-PWM Portland

8h 15m2 stops Orlando Baltimore/Washington

5:20 am - 11:45 amPWM Portland-ISP Islip Long Island

6h 25m1 stop Baltimore/Washington

$392Southwest

Thu, Dec 10 - Sun, Dec 13

3:10 pm - 11:55 pmISP Islip Long Island-PWM Portland

8h 45m1 stop Baltimore/Washington

5:40 am - 10:20 amPWM Portland-ISP Islip Long Island

4h 40m1 stop Baltimore/Washington

$421Southwest

Fri, Oct 23 - Sun, Oct 25

11:00 am - 9:55 pmISP Islip Long Island-PWM Portland

10h 55m2 stops Baltimore/Washington Chicago Midway

5:40 am - 10:20 amPWM Portland-ISP Islip Long Island

4h 40m1 stop Baltimore/Washington

$437Southwest

Fri, Oct 23 - Sun, Oct 25

11:00 am - 4:55 pmISP Islip Long Island-PWM Portland

5h 55m1 stop Baltimore/Washington

9:20 am - 3:45 pmPWM Portland-ISP Islip Long Island

6h 25m1 stop Baltimore/Washington

$453Southwest

Mon, Oct 19 - Wed, Oct 21

6:55 am - 4:55 pmISP Islip Long Island-PWM Portland

10h 00m2 stops Orlando Baltimore/Washington

9:20 am - 3:45 pmPWM Portland-ISP Islip Long Island

6h 25m1 stop Baltimore/Washington

$458Southwest

Mon, Oct 19 - Wed, Oct 21

4:20 pm - 10:40 pmISP Islip Long Island-PWM Portland

6h 20m1 stop Baltimore/Washington

5:35 am - 11:55 amPWM Portland-ISP Islip Long Island

6h 20m1 stop Baltimore/Washington

$489Southwest

Tue, Oct 13 - Sat, Oct 17

6:55 am - 4:55 pmISP Islip Long Island-PWM Portland

10h 00m2 stops Orlando Baltimore/Washington

11:35 am - 10:40 pmPWM Portland-ISP Islip Long Island

11h 05m2 stops Nashville Intl Baltimore/Washington

$499Southwest

Mon, Oct 19 - Wed, Oct 21

6:30 am - 2:45 pmISP Islip Long Island-PWM Portland

8h 15m2 stops Orlando Baltimore/Washington

3:25 pm - 9:40 pmPWM Portland-ISP Islip Long Island

6h 15m1 stop Baltimore/Washington

$536Southwest

Thu, Dec 3 - Tue, Dec 8

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Southwest flights from Islip, New York to Portland, Maine

Our best Southwest deals on Islip, New York to Portland, Maine flight tickets

Southwest

Dec 3

ISP6:05 amIslip Long Island

3h 45m

1 stop

PWM9:50 amPortland

Dec 8

PWM10:25 amPortland

5h 50m

1 stop

ISP4:15 pmIslip Long Island

$305

Southwest

Dec 10

ISP4:05 pmIslip Long Island

5h 40m

1 stop

PWM9:45 pmPortland

Dec 13

PWM11:10 amPortland

5h 55m

1 stop

ISP5:05 pmIslip Long Island

$336

Southwest

Dec 10

ISP6:30 amIslip Long Island

8h 15m

2 stops

PWM2:45 pmPortland

Dec 13

PWM5:20 amPortland

6h 25m

1 stop

ISP11:45 amIslip Long Island

$392

Breeze Airways flights from Islip, New York to Portland, Maine

Our best Breeze Airways deals on Islip, New York to Portland, Maine flight tickets

Breeze Airways

Dec 3

ISP7:45 pmIslip Long Island

21h 10m

2 stops

PWM4:55 pmPortland

Dec 8

PWM10:54 amPortland

7h 15m

1 stop

ISP6:09 pmIslip Long Island

$649

Breeze Airways

Dec 3

ISP5:28 pmIslip Long Island

23h 27m

3 stops

PWM4:55 pmPortland

Dec 8

PWM10:54 amPortland

7h 15m

1 stop

ISP6:09 pmIslip Long Island

$759

Breeze Airways

Dec 10

ISP5:28 pmIslip Long Island

23h 27m

3 stops

PWM4:55 pmPortland

Dec 13

PWM10:54 amPortland

7h 15m

1 stop

ISP6:09 pmIslip Long Island

$879

momondo Fare Finder

Use the filters below to find and compare flights from Islip, New York to Portland, Maine that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

IslipPortland

ISP Islip Long Island - PWM Portland

ISPPWM

Islip Long Island

Thu 12/3

6:05 am-9:50 am

1 stop3h 45m

Portland

Tue 12/8

10:25 am-4:15 pm

1 stop5h 50m

$305

IslipPortland

ISP Islip Long Island - PWM Portland

ISPPWM

Islip Long Island

Thu 12/10

4:05 pm-9:45 pm

1 stop5h 40m

Portland

Sun 12/13

11:10 am-5:05 pm

1 stop5h 55m

$336

IslipPortland

ISP Islip Long Island - PWM Portland

ISPPWM

Islip Long Island

Thu 12/10

6:30 am-2:45 pm

2 stops8h 15m

Portland

Sun 12/13

5:20 am-11:45 am

1 stop6h 25m

$392

IslipPortland

ISP Islip Long Island - PWM Portland

ISPPWM

Islip Long Island

Fri 10/23

3:10 pm-11:55 pm

1 stop8h 45m

Portland

Sun 10/25

5:40 am-10:20 am

1 stop4h 40m

$421

IslipPortland

ISP Islip Long Island - PWM Portland

ISPPWM

Islip Long Island

Fri 10/23

11:00 am-9:55 pm

2 stops10h 55m

Portland

Sun 10/25

5:40 am-10:20 am

1 stop4h 40m

$437

IslipPortland

ISP Islip Long Island - PWM Portland

ISPPWM

Islip Long Island

Mon 10/19

11:00 am-4:55 pm

1 stop5h 55m

Portland

Wed 10/21

9:20 am-3:45 pm

1 stop6h 25m

$453

IslipPortland

ISP Islip Long Island - PWM Portland

ISPPWM

Islip Long Island

Mon 10/19

6:55 am-4:55 pm

2 stops10h 00m

Portland

Wed 10/21

9:20 am-3:45 pm

1 stop6h 25m

$458

IslipPortland

ISP Islip Long Island - PWM Portland

ISPPWM

Islip Long Island

Tue 10/13

4:20 pm-10:40 pm

1 stop6h 20m

Portland

Sat 10/17

5:35 am-11:55 am

1 stop6h 20m

$489

IslipPortland

ISP Islip Long Island - PWM Portland

ISPPWM

Islip Long Island

Mon 10/19

6:55 am-4:55 pm

2 stops10h 00m

Portland

Wed 10/21

11:35 am-10:40 pm

2 stops11h 05m

$499

IslipPortland

ISP Islip Long Island - PWM Portland

ISPPWM

Islip Long Island

Thu 12/3

6:30 am-2:45 pm

2 stops8h 15m

Portland

Tue 12/8

3:25 pm-9:40 pm

1 stop6h 15m

$536

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Islip, New York to Portland, Maine

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Portland, Maine?

On average, the least expensive day to fly to Portland, Maine from Islip, New York is on a Sunday. momondo users have found tickets for Sunday departures for as low as $271. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday is the most expensive day to depart from Islip, New York because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $322.

What is the cheapest time of day to depart on your flight to Portland, Maine?

In the evening is the cheapest time of day to fly from Islip, New York to Portland, Maine when you can find flight prices for as low as $252. Flying to Portland, Maine in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the afternoon because they tend to be around $341. Of course, these prices can vary depending on the time of year and what airport you fly to.

When to book flights from Islip, New York to Portland, Maine

Are you open to changing your travel dates? Check out the ideal times to fly from Islip, New York to Portland, Maine according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Islip, New York to Portland, Maine (ISP to PWM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip, New York to Portland, Maine

Best Price Found	$140
Fastest flight time	5h 40m
Direct flights	None

The best one-way flight to Portland, Maine from Islip, New York in the past 72 hours is $140. The best round-trip flight deal from Islip, New York to Portland, Maine found on momondo in the last 72 hours is $305.

The fastest flight from Islip, New York to Portland, Maine takes 5h 40m

There are no direct flights from Islip, New York to Portland, Maine. There are no popular flight routes from Islip, New York to Portland, Maine.

Search flight deals

Frequently asked questions about flying from Islip, New York to Portland, Maine

How far is Islip Long Island to Portland by plane?
There are 252.6 mi between Islip Long Island and Portland. A reasonable flight in good conditions will take 5h 40m.
When did momondo last update prices for flights from Islip Long Island Airport to Portland Airport?
Prices for flights from Islip Long Island Airport to Portland Airport were last updated today.
How old do you have to be to fly from Islip Long Island Airport to Portland Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Islip Long Island Airport to Portland Airport.
What documentation or ID do you need to fly to Portland Airport?
The required travel and health documents for your Portland Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Portland Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

North Conway

Jackson

Boothbay Harbor

Brunswick

Lewiston

Freeport

Auburn

Conway

Bartlett

Gorham

Bath

Windham

Intervale

Oxford

Georgetown

Falmouth

Tamworth

Why use momondo?

Why should I use momondo to find a flight deal from Islip to Portland?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Islip to Portland for you.

Can I find flights from Islip to Portland with flexible booking policies on momondo?

Flights from Islip to Portland with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Islip to Portland?

Once you have performed a search for Islip to Portland flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Islip to Portland right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Islip to Portland now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Portland and let you know when they change.

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Cheap flights from Islip, New York to Portland from $140

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Islip, New York to Portland departing on 10/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Southwest flights from Islip, New York to Portland, Maine

Our best Southwest deals on Islip, New York to Portland, Maine flight tickets

Breeze Airways flights from Islip, New York to Portland, Maine

Our best Breeze Airways deals on Islip, New York to Portland, Maine flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Islip, New York to Portland, Maine that are best for you.

See travel insights to Portland from

How to get the cheapest flight ticket from Islip, New York to Portland, Maine

What is the cheapest day to depart on your flight to Portland, Maine?

What is the cheapest time of day to depart on your flight to Portland, Maine?

What is the cheapest airline that flies from Islip Long Island to Portland?

What airlines fly to Portland, Maine?

When to book flights from Islip, New York to Portland, Maine

Cheap Islip, New York to Portland, Maine (ISP to PWM) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Islip, New York to Portland, Maine

Traveling to a place near Portland?

Why use momondo?

An easier way to manage your Portland, Maine trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Maine

Fly your favorite airline to Portland

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Portland

List of cabin classes available on flights landing in Portland. Availability may vary depending on flight origin and airline.

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Popular flights according to clicks in the last 7 days on momondo

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According to popular flight searches on momondo this year

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