Which airports can I use when flying from Islip to Portland?

Flights from Islip to Portland usually depart from Islip Long Island (ISP) and arrive at Portland (PWM).

What cabin classes can I book on flights from Islip to Portland?

Only Economy Class is available on flights from Islip to Portland.

Which airports do connecting flights from Islip to Portland pass through?

Most connecting flights from Islip to Portland pass through Baltimore/Washington (BWI), which handles 100% of one-stop traffic on this route.

Can I save money by using flexible dates for flights from Islip to Portland?

Yes. Flexible dates can save you up to 22% on flights from Islip to Portland. Monday is the cheapest departure day at $472 round-trip on average, while Friday is the most expensive at $602, a difference of $130. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Do I need a passport to fly from Islip to Portland?

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

Have flight prices from Islip to Portland changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $321 to $1,218. That means the highest observed fare was about 4x higher than the lowest one.

How are flight prices from Islip to Portland looking right now?

One-way fares from Islip to Portland are currently lower than usual. Average one-way flight prices are about $252, which is 32% below the typical average for this route.

What car rental options are available at Portland Airport (PWM)?

Portland Airport (PWM) hosts 5 major car rental companies, with daily rates starting from around $24 for economy cars. Top options include: • Dollar • Budget • Movly • Alamo • Hertz

How much is a round-trip flight from Islip to Portland?

Round-trip flights from Islip to Portland typically range from $472 to $602. The lowest price found in the past 5 days was $321, on Southwest.

Which airline is the cheapest to fly from Islip to Portland?

Southwest ($321) and Breeze Airways ($613) are the cheapest airlines to fly round-trip from Islip to Portland according to KAYAK data over the last 5 days.

What is the cheapest layover airport when flying from Islip to Portland?

Flights via Baltimore/Washington (BWI) offer the most affordable fares, with an average round-trip price of $542. Based on KAYAK data over the past 3 months.

When flying from Islip to Portland which airport offers the shortest layover?

Baltimore/Washington (BWI) had the shortest average connection time for Islip to Portland layovers at 3h 31m over the past 3 months.

$245 CHEAP FLIGHTS from Islip to Portland (ISP - PWM)

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Cheapest round-trip

$321

Typical prices: $472-$602

Southwest

Tue 12/4Thu 12/6

ISP - PWM • 1 stop

Cheapest one-way

$174

Typical prices: $259-$371

Southwest

Thu 11/8

ISP - PWM • 1 stop

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Cheap Flights from Islip to Portland (ISP-PWM)

Cheap flights from Islip to Portland with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Round-trip

One-way

Last minute

Fri, Dec 4 - Sun, Dec 6

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

5h 40m1 stop Baltimore/Washington

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

6h 25m1 stop Baltimore/Washington

$321Southwest

Fri, Dec 18 - Tue, Dec 22

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

3h 45m1 stop Baltimore/Washington

5:25 am - 5:20 pmPWM Portland-ISP Islip Long Island

11h 55m2 stops Baltimore/Washington Tampa

$361Southwest

Fri, Dec 18 - Tue, Dec 22

5:35 am - 4:40 pmISP Islip Long Island-PWM Portland

11h 05m2 stops Orlando Baltimore/Washington

5:25 am - 5:20 pmPWM Portland-ISP Islip Long Island

11h 55m2 stops Baltimore/Washington Tampa

$366Southwest

Fri, Nov 6 - Sun, Nov 8

5:40 pm - 11:55 pmISP Islip Long Island-PWM Portland

6h 15m1 stop Baltimore/Washington

5:10 pm - 11:35 pmPWM Portland-ISP Islip Long Island

6h 25m1 stop Baltimore/Washington

$382Southwest

Fri, Dec 18 - Tue, Dec 22

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

3h 45m1 stop Baltimore/Washington

5:20 pm - 11:45 pmPWM Portland-ISP Islip Long Island

6h 25m1 stop Baltimore/Washington

$387Southwest

Wed, Oct 28 - Sun, Nov 1

6:05 am - 12:20 pmISP Islip Long Island-PWM Portland

6h 15m1 stop Baltimore/Washington

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

6h 25m1 stop Baltimore/Washington

$489Southwest

Wed, Oct 28 - Sun, Nov 1

6:05 am - 5:20 pmISP Islip Long Island-PWM Portland

11h 15m2 stops Baltimore/Washington Nashville Intl

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

6h 25m1 stop Baltimore/Washington

$494Southwest

Fri, Dec 4 - Sun, Dec 6

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

8h 15m2 stops Orlando Baltimore/Washington

5:10 pm - 11:30 pmPWM Portland-ISP Islip Long Island

6h 20m1 stop Baltimore/Washington

$567Southwest

Thu, Dec 3 - Tue, Dec 8

7:45 pm - 4:55 pmISP Islip Long Island-PWM Portland

21h 10m2 stops Norfolk Charleston

10:54 am - 6:09 pmPWM Portland-ISP Islip Long Island

7h 15m1 stop Sarasota Bradenton Intl

$613Breeze Airways

Fri, Nov 6 - Sun, Nov 8

9:39 am - 4:55 pmISP Islip Long Island-PWM Portland

7h 16m1 stop Charleston

3:10 pm - 8:59 amPWM Portland-ISP Islip Long Island

17h 49m2 stops Pittsburgh Charleston

$675Breeze Airways

Price, demand and travel trends for Islip to Portland flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Prices

Airlines

Layovers

How much is a round-trip flight from Islip to Portland? This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Islip to Portland departing in december.

Find deals

Cheapest flight	$174

One-way flight from Islip to Portland

When to book flights from Islip to Portland

Are your dates flexible? Find out the best times to travel from Islip to Portland based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What cabin classes can I book on flights from Islip to Portland?
Only Economy Class is available on flights from Islip to Portland.
Do I need a passport to fly from Islip to Portland?
No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.
Have flight prices from Islip to Portland changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $321 to $1,218. That means the highest observed fare was about 4x higher than the lowest one.
How are flight prices from Islip to Portland looking right now?
One-way fares from Islip to Portland are currently lower than usual. Average one-way flight prices are about $252, which is 32% below the typical average for this route.
What car rental options are available at Portland Airport (PWM)?
Portland Airport (PWM) hosts 5 major car rental companies, with daily rates starting from around $24 for economy cars. Top options include:

• Dollar
• Budget
• Movly
• Alamo
• Hertz
Which airports can I use when flying from Islip to Portland?
Flights from Islip to Portland usually depart from Islip Long Island (ISP) and arrive at Portland (PWM).
Which airports do connecting flights from Islip to Portland pass through?
Most connecting flights from Islip to Portland pass through Baltimore/Washington (BWI), which handles 100% of one-stop traffic on this route.
Can I save money by using flexible dates for flights from Islip to Portland?
Yes. Flexible dates can save you up to 22% on flights from Islip to Portland. Monday is the cheapest departure day at $472 round-trip on average, while Friday is the most expensive at $602, a difference of $130.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

If your dates are flexible, aim for a Monday departure and avoid flying on Friday. On this route, Monday flights average $472, about $130 less than Friday fares (22% savings) based on the last 12 months.
If you're arriving late at night and need somewhere to stay, check out these hotels close to Portland Airport.

• Clarion Hotel Portland Airport Me
• La Quinta Inn & Suites by Wyndham Portland DT/Maine Med
• DoubleTree by Hilton Portland

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ISP - PWM

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Everything you should know

Cheap Flights from Islip to Portland (ISP-PWM)

Cheap flights from Islip to Portland with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Price, demand and travel trends for Islip to Portland flights

How much is a round-trip flight from Islip to Portland?

Which airline is the cheapest to fly from Islip to Portland?

What is the cheapest layover airport when flying from Islip to Portland?

When flying from Islip to Portland which airport offers the shortest layover?

Key details for Islip to Portland flights

Cheapest flight

When to book flights from Islip to Portland

Your Islip to Portland flight questions, answered

Your guide to booking Islip to Portland flights

More options for your flight from Islip to Portland

Complete your trip to Portland with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from Islip to Portland

Find direct flights to and from Islip and Portland

Flights from domestic origins to Portland

Flights to other popular destinations

Find deals for your return flight