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Cheap flights from Portland to New York from $275

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 4/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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
5:10 am - 4:30 pm
PDX
-
ISP
8h 20m
2 stops
Southwest Logo
11:50 am - 11:30 pm
ISP
-
PDX
14h 40m
2 stops
$477Southwest
Fr, Apr 17 - So, Apr 19
Southwest Logo
11:30 pm - 2:50 pm
PDX
-
ISP
12h 20m
2 stops
Southwest Logo
9:10 am - 4:20 pm
ISP
-
PDX
10h 10m
1 stop
$482Southwest
Fr, Jul 17 - Do, Jul 23
Southwest Logo
11:30 pm - 2:50 pm
PDX
-
ISP
12h 20m
2 stops
Southwest Logo
12:30 pm - 9:30 pm
ISP
-
PDX
12h 00m
2 stops
$487Southwest
Fr, Jul 17 - Do, Jul 23
Southwest Logo
9:20 pm - 11:35 am
PDX
-
ISP
11h 15m
1 stop
Southwest Logo
9:10 am - 4:20 pm
ISP
-
PDX
10h 10m
1 stop
$494Southwest
Fr, Jul 17 - Do, Jul 23
Southwest Logo
8:40 am - 10:50 pm
PDX
-
ISP
11h 10m
2 stops
Southwest Logo
5:00 am - 5:45 pm
ISP
-
PDX
15h 45m
2 stops
$597Southwest
Di, Mrz 31 - Sa, Apr 4
Southwest Logo
7:25 am - 11:55 pm
PDX
-
ISP
13h 30m
2 stops
Southwest Logo
12:15 pm - 10:35 pm
ISP
-
PDX
13h 20m
2 stops
$892Southwest
Do, Apr 2 - Mo, Apr 6
Multiple Airlines Logo
7:00 am - 6:44 pm
PDX
-
ISP
8h 44m
1 stop
Multiple Airlines Logo
9:59 am - 7:48 pm
ISP
-
PDX
12h 49m
1 stop
$1,184Multiple Airlines
Di, Mrz 31 - Sa, Apr 4
Multiple Airlines Logo
7:00 am - 6:44 pm
PDX
-
ISP
8h 44m
1 stop
Multiple Airlines Logo
9:59 am - 7:48 pm
ISP
-
PDX
12h 49m
1 stop
$1,319Multiple Airlines
Do, Apr 2 - Mo, Apr 6
Multiple Airlines Logo
7:00 am - 6:44 pm
PDX
-
ISP
8h 44m
1 stop
Multiple Airlines Logo
9:59 am - 7:48 pm
ISP
-
PDX
12h 49m
1 stop
$1,619Multiple Airlines
Fr, Apr 17 - So, Apr 19

Southwest flights from Portland to Islip, New York

Our best Southwest deals on Portland to Islip, New York flight tickets
Southwest
Apr 17
PDX5:10 amPortland
8h 20m
2 stops
ISP4:30 pmIslip Long Island
Apr 19
ISP11:50 amIslip Long Island
14h 40m
2 stops
PDX11:30 pmPortland
$477
Southwest
Jul 17
PDX11:30 pmPortland
12h 20m
2 stops
ISP2:50 pmIslip Long Island
Jul 23
ISP9:10 amIslip Long Island
10h 10m
1 stop
PDX4:20 pmPortland
$482
Southwest
Jul 17
PDX11:30 pmPortland
12h 20m
2 stops
ISP2:50 pmIslip Long Island
Jul 23
ISP12:30 pmIslip Long Island
12h 00m
2 stops
PDX9:30 pmPortland
$487

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 März 20, 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

Fr 4/17

5:10 am-4:30 pm

2 stops8h 20m

Islip Long Island

So 4/19

11:50 am-11:30 pm

2 stops14h 40m

$477

PortlandIslip

PDX - ISP

PDXISP

Portland

Fr 7/17

11:30 pm-2:50 pm

2 stops12h 20m

Islip Long Island

Do 7/23

9:10 am-4:20 pm

1 stop10h 10m

$482

PortlandIslip

PDX - ISP

PDXISP

Portland

Fr 7/17

11:30 pm-2:50 pm

2 stops12h 20m

Islip Long Island

Do 7/23

12:30 pm-9:30 pm

2 stops12h 00m

$487
Quickest round-trip

PortlandIslip

PDX - ISP

PDXISP

Portland

Fr 7/17

9:20 pm-11:35 am

1 stop11h 15m

Islip Long Island

Do 7/23

9:10 am-4:20 pm

1 stop10h 10m

$494

PortlandIslip

PDX - ISP

PDXISP

Portland

Di 3/31

8:40 am-10:50 pm

2 stops11h 10m

Islip Long Island

Sa 4/4

5:00 am-5:45 pm

2 stops15h 45m

$597

PortlandIslip

PDX - ISP

PDXISP

Portland

Do 4/2

7:25 am-11:55 pm

2 stops13h 30m

Islip Long Island

Mo 4/6

12:15 pm-10:35 pm

2 stops13h 20m

$892

PortlandIslip

PDX - ISP

PDXISP

Portland

Di 3/31

7:00 am-6:44 pm

1 stop8h 44m

Islip Long Island

Sa 4/4

9:59 am-7:48 pm

1 stop12h 49m

$1,184

PortlandIslip

PDX - ISP

PDXISP

Portland

Do 4/2

7:00 am-6:44 pm

1 stop8h 44m

Islip Long Island

Mo 4/6

9:59 am-7:48 pm

1 stop12h 49m

$1,319

PortlandIslip

PDX - ISP

PDXISP

Portland

Fr 4/17

7:00 am-6:44 pm

1 stop8h 44m

Islip Long Island

So 4/19

9:59 am-7:48 pm

1 stop12h 49m

$1,619
Cheapest one-way
Quickest one-way

PortlandIslip

PDX - ISP

PDXISP

Portland

Do 4/16

5:10 am-4:30 pm

2 stops8h 20m

$275

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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?

Southwest is the most popular carrier 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 38% of people opting to fly with this airline when traveling to Islip, New York. Keep in mind that there are 10 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 47m

Direct flights

None
The fastest flight from Portland to Islip, New York takes 8h 47m
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

  • 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 47m 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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