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Cheap flights from Portland to New York from $463

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to New York departing on 12/8. 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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0 bags

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Find the cheapest flights from Portland to New York

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
5:20 am - 11:55 pmPDX-ISP
15h 35m2 stops
Southwest Logo
10:20 am - 8:05 pmISP-PDX
12h 45m2 stops
$505Southwest
Find Deal
Fri, Dec 19 - Sat, Jan 3
Multiple Airlines Logo
9:33 pm - 11:04 amPDX-ISP
10h 31m1 stop
Multiple Airlines Logo
12:40 pm - 8:07 pmISP-PDX
10h 27m1 stop
$1,254Multiple Airlines
Find Deal
Fri, Oct 24 - Tue, Oct 28
Multiple Airlines Logo
7:14 am - 7:45 pmPDX-ISP
9h 31m1 stop
Multiple Airlines Logo
9:59 am - 8:36 pmISP-PDX
13h 37m1 stop
$1,334Multiple Airlines
Find Deal
Fri, Dec 19 - Sat, Jan 3
Multiple Airlines Logo
9:33 pm - 11:04 amPDX-ISP
10h 31m1 stop
Multiple Airlines Logo
9:59 am - 11:33 pmISP-PDX
16h 34m2 stops
$1,502Multiple Airlines
Find Deal
Thu, Oct 23 - Mon, Oct 27
Multiple Airlines Logo
9:33 pm - 11:04 amPDX-ISP
10h 31m1 stop
Multiple Airlines Logo
12:40 pm - 8:07 pmISP-PDX
10h 27m1 stop
$1,549Multiple Airlines
Find Deal
Thu, Oct 23 - Mon, Oct 27

momondo Fare Finder

 
Customize your flight search to find flights from Portland to Islip 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, momondo users made 832,500 searches. Data last updated October 10, 2025.
Use the filters below to find and compare flights from Portland to Islip that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandIslip

PDX - ISP

PDXISP

Portland

Fri 12/19

5:20 am-11:55 pm

2 stops15h 35m

Islip Long Island

Sat 1/3

10:20 am-8:05 pm

2 stops12h 45m

$505

PortlandIslip

PDX - ISP

PDXISP

Portland

Fri 10/24

9:33 pm-11:04 am

1 stop10h 31m

Islip Long Island

Tue 10/28

12:40 pm-8:07 pm

1 stop10h 27m

$1,254

PortlandIslip

PDX - ISP

PDXISP

Portland

Fri 12/19

7:14 am-7:45 pm

1 stop9h 31m

Islip Long Island

Sat 1/3

9:59 am-8:36 pm

1 stop13h 37m

$1,334

PortlandIslip

PDX - ISP

PDXISP

Portland

Thu 10/23

9:33 pm-11:04 am

1 stop10h 31m

Islip Long Island

Mon 10/27

9:59 am-11:33 pm

2 stops16h 34m

$1,502

PortlandIslip

PDX - ISP

PDXISP

Portland

Thu 10/23

9:33 pm-11:04 am

1 stop10h 31m

Islip Long Island

Mon 10/27

12:40 pm-8:07 pm

1 stop10h 27m

$1,549

PortlandIslip

PDX - ISP

PDXISP

Portland

Mon 12/8

8:44 pm-11:04 am

2 stops11h 20m

$463

PortlandIslip

PDX - ISP

PDXISP

Portland

Fri 12/12

8:44 pm-11:04 am

2 stops11h 20m

$468

PortlandIslip

PDX - ISP

PDXISP

Portland

Fri 12/12

8:44 pm-11:04 am

2 stops11h 20m

$502

PortlandIslip

PDX - ISP

PDXISP

Portland

Wed 12/3

8:44 pm-11:04 am

2 stops11h 20m

$507

PortlandIslip

PDX - ISP

PDXISP

Portland

Mon 11/10

8:45 pm-11:04 am

2 stops11h 19m

$522

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Portland to Islip

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

What is the cheapest day to depart on your flight to Islip?

On average, the least expensive day to fly to Islip from Portland is on a Friday. momondo users have found tickets for Friday departures for as low as $377. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Portland to Islip on a Saturday will generally be more expensive and average around $398. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

When to book flights from Portland to Islip

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Islip according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland to Islip (PDX to ISP) flight deals and tips

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

Direct flights

None
There are no direct flights from Portland to Islip. There are no popular flight routes from Portland to Islip.
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  • How far is Portland to Islip Long Island by plane?

    A flight from Portland to Islip Long Island will travel around 2474.8 mi. Typically, this will take 9h 31m by plane in normal conditions.

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

    Prices for flights from Portland Airport to Islip Long Island Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Portland Airport to Islip Long Island Airport?

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

  • What documentation or ID do you need to fly to Islip Long Island Airport?

    The travel and health documents you'll need for your trip to Islip Long Island Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Islip Long Island Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Portland to Islip?

Best airlines flying from Portland to Islip

Compare and see reviews for airlines that fly from Portland to Islip with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $361Free CancellationRating
8.0
4,237 reviews
Search Southwest flights

Traveling to a place near New York?

Book flights to New York if you plan to visit one of these locations
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Riverhead
Sag Harbor
Southampton
Amagansett

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Portland to Islip. momondo saves you time and could save you money on your trip.

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

All flight searches from Portland to Islip on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Portland and Islip by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Islip from Portland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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