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. Other layover airports each see under 5%.

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

Yes. Being flexible with your travel dates can save you up to 34% on the Islip to Portland route. Tuesday is the cheapest departure day at $398 round-trip on average, while Friday is the most expensive at $602, a difference of $204. 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 $279 to $1,173. 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 $325, which is 12% 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 · Alamo · Hertz · Movly

How much should I expect to pay for a Islip to Portland flight?

Round-trip flights from Islip to Portland range from $398 to $602, with an average of $472 over the past 12 months. Anything below $398 counts as a good deal.

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

Southwest ($279) and Breeze Airways ($359) 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 $502. 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 210 minutes over the past 3 months.

$140 CHEAP FLIGHTS from Islip to Portland (ISP - PWM)

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Cheapest round-trip

$279

Typical prices: $398-$602

Southwest

Sun 10/28Wed 10/31

ISP - PWM • 1 stop

Cheapest one-way

$140

Typical prices: $273-$371

Southwest

Fri 9/28

ISP - PWM • 1 stop

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Flight Deals

Cheap Flights from Islip to Portland (ISP-PWM)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Islip to Portland

Wed, Oct 28 - Sat, Oct 31

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

6h 15m1 stop Baltimore/Washington

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

6h 20m1 stop Baltimore/Washington

$279Southwest

Wed, Oct 28 - Sat, Oct 31

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

11h 15m2 stops Baltimore/Washington Nashville Intl

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

6h 20m1 stop Baltimore/Washington

$284Southwest

Thu, Sep 17 - Tue, Sep 22

6:10 am - 9:50 amISP Islip Long Island-PWM Portland

3h 40m1 stop Baltimore/Washington

5:45 am - 12:10 pmPWM Portland-ISP Islip Long Island

6h 25m1 stop Baltimore/Washington

$338Southwest

Sun, Nov 15 - Sat, Nov 21

5:35 am - 10:30 amISP Islip Long Island-PWM Portland

4h 55m1 stop Baltimore/Washington

5:25 pm - 11:40 pmPWM Portland-ISP Islip Long Island

6h 15m1 stop Baltimore/Washington

$343Southwest

Tue, Sep 22 - Tue, Sep 29

6:05 am - 9:55 amISP Islip Long Island-PWM Portland

3h 50m1 stop Baltimore/Washington

5:45 am - 10:15 amPWM Portland-ISP Islip Long Island

4h 30m1 stop Baltimore/Washington

$348Southwest

Tue, Sep 8 - Tue, Sep 15

11:56 am - 9:19 pmISP Islip Long Island-PWM Portland

9h 23m2 stops Norfolk Charleston

5:09 pm - 11:20 amPWM Portland-ISP Islip Long Island

18h 11m1 stop Raleigh-Durham

$359Breeze Airways

Tue, Sep 22 - Tue, Sep 29

5:43 pm - 4:24 pmISP Islip Long Island-PWM Portland

22h 41m2 stops Orlando Raleigh-Durham

5:09 pm - 11:20 amPWM Portland-ISP Islip Long Island

18h 11m1 stop Raleigh-Durham

$370Multiple Airlines

Mon, Nov 23 - Sat, Nov 28

5:35 am - 10:30 amISP Islip Long Island-PWM Portland

4h 55m1 stop Baltimore/Washington

5:15 am - 4:25 pmPWM Portland-ISP Islip Long Island

11h 10m1 stop Baltimore/Washington

$373Southwest

Thu, Sep 17 - Fri, Sep 18

6:10 am - 9:50 amISP Islip Long Island-PWM Portland

3h 40m1 stop Baltimore/Washington

5:55 am - 9:40 amPWM Portland-ISP Islip Long Island

3h 45m1 stop Baltimore/Washington

$388Southwest

Recent last minute flight deals from Islip to Portland

Sun, Aug 30 - Tue, Sep 1

7:09 pm - 9:12 amISP Islip Long Island-PWM Portland

14h 03m1 stop Orlando

8:00 am - 9:53 amPWM Portland-ISP Islip Long Island

25h 53m2 stops Charleston Orlando

$524Multiple Airlines

Fri, Aug 28 - Sun, Aug 30

7:09 pm - 10:27 amISP Islip Long Island-PWM Portland

15h 18m1 stop Orlando

7:00 am - 1:28 pmPWM Portland-ISP Islip Long Island

30h 28m2 stops Akron/Canton Raleigh-Durham

$623Multiple Airlines

Sat, Aug 29 - Mon, Aug 31

3:34 pm - 10:39 pmISP Islip Long Island-PWM Portland

31h 05m2 stops Myrtle Beach Intl Akron/Canton

9:52 am - 6:14 pmPWM Portland-ISP Islip Long Island

8h 22m1 stop Orlando

$631Multiple Airlines

Sat, Aug 29 - Mon, Aug 31

11:57 am - 4:16 pmISP Islip Long Island-PWM Portland

4h 19m1 stop Raleigh-Durham

9:52 am - 9:53 amPWM Portland-ISP Islip Long Island

24h 01m1 stop Orlando

$784Multiple Airlines

Fri, Aug 28 - Sun, Aug 30

6:10 am - 12:25 pmISP Islip Long Island-PWM Portland

6h 15m1 stop Baltimore/Washington

11:10 am - 3:55 pmPWM Portland-ISP Islip Long Island

4h 45m1 stop Baltimore/Washington

$817Southwest

Sat, Aug 29 - Mon, Aug 31

6:09 pm - 10:39 pmISP Islip Long Island-PWM Portland

28h 30m2 stops Myrtle Beach Intl Akron/Canton

6:29 pm - 11:16 amPWM Portland-ISP Islip Long Island

16h 47m2 stops Charleston Norfolk

$819Breeze Airways

Sat, Aug 29 - Mon, Aug 31

6:00 am - 3:00 pmISP Islip Long Island-PWM Portland

9h 00m2 stops Orlando Baltimore/Washington

7:40 am - 4:25 pmPWM Portland-ISP Islip Long Island

8h 45m2 stops Chicago Midway Baltimore/Washington

$827Southwest

Sun, Aug 30 - Tue, Sep 1

7:00 am - 4:35 pmISP Islip Long Island-PWM Portland

9h 35m2 stops Orlando Nashville Intl

7:45 am - 9:05 pmPWM Portland-ISP Islip Long Island

13h 20m2 stops Chicago Midway Baltimore/Washington

$833Southwest

Fri, Aug 28 - Sun, Aug 30

12:35 pm - 9:30 pmISP Islip Long Island-PWM Portland

8h 55m2 stops Baltimore/Washington Chicago Midway

7:40 am - 3:55 pmPWM Portland-ISP Islip Long Island

8h 15m2 stops Chicago Midway Baltimore/Washington

$858Southwest

Sun, Aug 30 - Tue, Sep 1

6:20 am - 10:35 amISP Islip Long Island-PWM Portland

4h 15m1 stop Baltimore/Washington

5:45 am - 12:10 pmPWM Portland-ISP Islip Long Island

6h 25m1 stop Baltimore/Washington

$992Southwest

Booking Insights

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 from Islip to Portland with more confidence.

Prices

Airlines

Layovers

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

Round-trip flights from Islip to Portland start at $279. Prices are below average for this route right now, with typical round-trip fares ranging from $398 to $602. The lowest price found in the past 5 days was $279 on Southwest.

Find deals

Cheapest flight	$140

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.

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. Other layover airports each see under 5%.
Can I save money by using flexible dates for flights from Islip to Portland?
Yes. Being flexible with your travel dates can save you up to 34% on the Islip to Portland route. Tuesday is the cheapest departure day at $398 round-trip on average, while Friday is the most expensive at $602, a difference of $204. 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 $279 to $1,173. 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 $325, which is 12% 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
· Alamo
· Hertz
· Movly
How much should I expect to pay for a Islip to Portland flight?
Round-trip flights from Islip to Portland range from $398 to $602, with an average of $472 over the past 12 months. Anything below $398 counts as a good deal.

If your dates can be flexible, aim for a Tuesday departure instead of Friday. On this route, Tuesday flights average $398 - about $204 less than Friday (34% 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

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

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Islip (ISP)

Portland (PWM)

ISP - PWM

$140 Find Cheap Flights from Islip to Portland - Compare and Save

Everything you should know

Cheap Flights from Islip to Portland (ISP-PWM)

Recent round-trip flight deals from Islip to Portland

Recent one-way flight deals from Islip to Portland

Recent last minute flight deals from Islip to Portland

Price, demand and travel trends for Islip to Portland flights

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

What is the cheapest airline 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

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

Information on your arrival and departure airports

Cabin class types available on flights from Islip to Portland

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

Find direct flights to and from Islip and Portland

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Choose which airport to fly into in Portland

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