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Cheap flights from Portland to New York from $147

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 5/10. 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
5:50 am - 9:05 pm
PDX
-
ISP
12h 15m
2 stops
Southwest Logo
6:05 am - 10:40 am
ISP
-
PDX
7h 35m
1 stop
$388Southwest
Tue, Aug 18 - Wed, Aug 19
Southwest Logo
5:50 am - 9:05 pm
PDX
-
ISP
12h 15m
2 stops
Southwest Logo
6:05 am - 3:00 pm
ISP
-
PDX
11h 55m
2 stops
$393Southwest
Tue, Aug 18 - Wed, Aug 19
Southwest Logo
9:20 pm - 8:20 am
PDX
-
ISP
8h 00m
1 stop
Southwest Logo
6:05 am - 10:40 am
ISP
-
PDX
7h 35m
1 stop
$425Southwest
Wed, Jul 22 - Tue, Aug 18
Southwest Logo
5:55 pm - 8:20 am
PDX
-
ISP
11h 25m
2 stops
Southwest Logo
6:05 am - 10:40 am
ISP
-
PDX
7h 35m
1 stop
$430Southwest
Wed, Jul 22 - Tue, Aug 18
Southwest Logo
11:30 pm - 11:50 am
PDX
-
ISP
9h 20m
2 stops
Southwest Logo
6:05 am - 3:00 pm
ISP
-
PDX
11h 55m
2 stops
$435Southwest
Wed, Jul 22 - Tue, Aug 18
Southwest Logo
6:40 am - 10:10 pm
PDX
-
ISP
12h 30m
2 stops
Southwest Logo
10:00 am - 6:45 pm
ISP
-
PDX
11h 45m
2 stops
$597Southwest
Tue, May 12 - Sat, May 16
Southwest Logo
6:30 am - 10:10 pm
PDX
-
ISP
12h 40m
2 stops
Southwest Logo
11:50 am - 10:50 pm
ISP
-
PDX
14h 00m
2 stops
$837Southwest
Wed, May 13 - Sun, May 17
Multiple Airlines Logo
9:56 pm - 11:05 am
PDX
-
ISP
10h 09m
1 stop
Multiple Airlines Logo
12:30 pm - 8:50 pm
ISP
-
PDX
11h 20m
1 stop
$1,184Multiple Airlines
Tue, Aug 18 - Wed, Aug 19
Multiple Airlines Logo
8:30 pm - 11:05 am
PDX
-
ISP
11h 35m
2 stops
Multiple Airlines Logo
9:59 am - 8:47 pm
ISP
-
PDX
13h 48m
1 stop
$1,245Multiple Airlines
Tue, May 12 - Sat, May 16
Multiple Airlines Logo
7:30 am - 7:45 pm
PDX
-
ISP
9h 15m
1 stop
Multiple Airlines Logo
9:59 am - 8:47 pm
ISP
-
PDX
13h 48m
1 stop
$1,424Multiple Airlines
Tue, May 12 - Sat, May 16

Southwest flights from Portland to Islip, New York

Our best Southwest deals on Portland to Islip, New York flight tickets
Southwest
Aug 18
PDX5:50 amPortland
12h 15m
2 stops
ISP9:05 pmIslip Long Island
Aug 19
ISP6:05 amIslip Long Island
7h 35m
1 stop
PDX10:40 amPortland
$388
Southwest
Aug 18
PDX5:50 amPortland
12h 15m
2 stops
ISP9:05 pmIslip Long Island
Aug 19
ISP6:05 amIslip Long Island
11h 55m
2 stops
PDX3:00 pmPortland
$393
Southwest
Jul 22
PDX9:20 pmPortland
8h 00m
1 stop
ISP8:20 amIslip Long Island
Aug 18
ISP6:05 amIslip Long Island
7h 35m
1 stop
PDX10:40 amPortland
$425

momondo Fare Finder

 
Customize your flight search to find flights from Portland to Islip, New York 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 April 30, 2026.
Use the filters below to find and compare flights from Portland to Islip, New York that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandIslip

PDX - ISP

PDXISP

Portland

Tue 8/18

5:50 am-9:05 pm

2 stops12h 15m

Islip Long Island

Wed 8/19

6:05 am-10:40 am

1 stop7h 35m

$388

PortlandIslip

PDX - ISP

PDXISP

Portland

Tue 8/18

5:50 am-9:05 pm

2 stops12h 15m

Islip Long Island

Wed 8/19

6:05 am-3:00 pm

2 stops11h 55m

$393
Quickest round-trip

PortlandIslip

PDX - ISP

PDXISP

Portland

Wed 7/22

9:20 pm-8:20 am

1 stop8h 00m

Islip Long Island

Tue 8/18

6:05 am-10:40 am

1 stop7h 35m

$425

PortlandIslip

PDX - ISP

PDXISP

Portland

Wed 7/22

5:55 pm-8:20 am

2 stops11h 25m

Islip Long Island

Tue 8/18

6:05 am-10:40 am

1 stop7h 35m

$430

PortlandIslip

PDX - ISP

PDXISP

Portland

Wed 7/22

11:30 pm-11:50 am

2 stops9h 20m

Islip Long Island

Tue 8/18

6:05 am-3:00 pm

2 stops11h 55m

$435

PortlandIslip

PDX - ISP

PDXISP

Portland

Tue 5/12

6:40 am-10:10 pm

2 stops12h 30m

Islip Long Island

Sat 5/16

10:00 am-6:45 pm

2 stops11h 45m

$597

PortlandIslip

PDX - ISP

PDXISP

Portland

Wed 5/13

6:30 am-10:10 pm

2 stops12h 40m

Islip Long Island

Sun 5/17

11:50 am-10:50 pm

2 stops14h 00m

$837

PortlandIslip

PDX - ISP

PDXISP

Portland

Tue 8/18

9:56 pm-11:05 am

1 stop10h 09m

Islip Long Island

Wed 8/19

12:30 pm-8:50 pm

1 stop11h 20m

$1,184

PortlandIslip

PDX - ISP

PDXISP

Portland

Tue 5/12

8:30 pm-11:05 am

2 stops11h 35m

Islip Long Island

Sat 5/16

9:59 am-8:47 pm

1 stop13h 48m

$1,245

PortlandIslip

PDX - ISP

PDXISP

Portland

Tue 5/12

7:30 am-7:45 pm

1 stop9h 15m

Islip Long Island

Sat 5/16

9:59 am-8:47 pm

1 stop13h 48m

$1,424

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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See travel insights to New York from

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

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 airline that flies from Portland to Islip Long Island?

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

What airlines fly to Islip, New York?

Alaska Airlines, Delta and United Airlines are the top three most popular airlines that fly to Islip, New York from Portland according to our data. Alaska Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Islip, New York. Keep in mind that there are 9 different airlines that fly to Islip, New York on a routine basis, so you have a few additional options to choose from.

When to book flights from Portland to Islip, New York

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

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

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

Fastest flight time

8h 00m

Direct flights

None
The fastest flight from Portland to Islip, New York takes 8h 00m
There are no direct flights from Portland to Islip, New York. There are no popular flight routes from Portland to Islip, New York.
Search flight deals

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

  • 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 8h 00m 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 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.

Traveling to a place near New York?

Book flights to New York if you plan to visit one of these locations
Montauk
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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