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Cheap flights from Portland to New York from $152

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 9/18. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Portland to New York

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
10:45 pm - 12:05 pmPDX  Portland-ISP Islip Long Island
10h 20m1 stop Baltimore/Washington
Southwest Logo
10:20 am - 3:00 pmISP  Islip Long Island-PDX Portland
7h 40m1 stop Baltimore/Washington
$373Southwest
Fri, Sep 11 - Fri, Sep 18
Southwest Logo
10:45 pm - 2:30 pmPDX  Portland-ISP Islip Long Island
12h 45m1 stop Baltimore/Washington
Southwest Logo
12:35 pm - 8:45 pmISP  Islip Long Island-PDX Portland
11h 10m2 stops Baltimore/Washington Chicago Midway
$379Southwest
Fri, Sep 11 - Fri, Sep 18
Southwest Logo
10:45 pm - 10:15 amPDX  Portland-ISP Islip Long Island
8h 30m1 stop Baltimore/Washington
Southwest Logo
6:05 am - 10:40 amISP  Islip Long Island-PDX Portland
7h 35m1 stop Baltimore/Washington
$477Southwest
Tue, Sep 8 - Tue, Sep 15
Southwest Logo
10:45 pm - 10:15 amPDX  Portland-ISP Islip Long Island
8h 30m1 stop Baltimore/Washington
Southwest Logo
3:20 pm - 10:15 pmISP  Islip Long Island-PDX Portland
9h 55m2 stops Baltimore/Washington Denver Intl
$482Southwest
Tue, Sep 8 - Tue, Sep 15
Southwest Logo
11:30 pm - 12:10 pmPDX  Portland-ISP Islip Long Island
9h 40m2 stops Chicago Midway Baltimore/Washington
Southwest Logo
12:55 pm - 8:45 pmISP  Islip Long Island-PDX Portland
10h 50m2 stops Baltimore/Washington San Jose
$487Southwest
Tue, Sep 8 - Tue, Sep 15
Southwest Logo
7:00 pm - 11:45 amPDX  Portland-ISP Islip Long Island
13h 45m2 stops Phoenix Sky Harbor Intl Baltimore/Washington
Southwest Logo
6:00 am - 5:45 pmISP  Islip Long Island-PDX Portland
14h 45m2 stops Baltimore/Washington Phoenix Sky Harbor Intl
$493Southwest
Sun, Nov 8 - Sat, Nov 14
Southwest Logo
11:30 pm - 2:30 pmPDX  Portland-ISP Islip Long Island
12h 00m2 stops Chicago Midway Baltimore/Washington
Southwest Logo
12:35 pm - 8:45 pmISP  Islip Long Island-PDX Portland
11h 10m2 stops Baltimore/Washington Chicago Midway
$523Southwest
Fri, Sep 11 - Fri, Sep 18
Multiple Airlines Logo
9:00 am - 6:35 pmPDX  Portland-ISP Islip Long Island
30h 35m3 stops San Francisco Washington, D.C. Dulles Intl Boston Logan Intl
Multiple Airlines Logo
7:31 am - 12:34 amISP  Islip Long Island-PDX Portland
20h 03m2 stops Boston Logan Intl San Francisco
$970Multiple Airlines
Sat, Sep 26 - Thu, Oct 1
Multiple Airlines Logo
9:36 pm - 10:30 amPDX  Portland-ISP Islip Long Island
9h 54m1 stop Boston Logan Intl
Multiple Airlines Logo
2:16 pm - 8:50 pmISP  Islip Long Island-PDX Portland
9h 34m1 stop Boston Logan Intl
$1,024Multiple Airlines
Sat, Sep 26 - Thu, Oct 1
Multiple Airlines Logo
4:07 pm - 8:59 pmPDX  Portland-ISP Islip Long Island
25h 52m3 stops Denver Intl Chicago O'Hare Intl Boston Logan Intl
Multiple Airlines Logo
5:34 pm - 8:10 pmISP  Islip Long Island-PDX Portland
29h 36m2 stops Boston Logan Intl Washington, D.C. Dulles Intl
$1,096Multiple Airlines
Fri, Sep 11 - Fri, Sep 18

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Southwest flights from Portland to Islip, New York

Our best Southwest deals on Portland to Islip, New York flight tickets
Southwest
Sep 11
PDX10:45 pmPortland
10h 20m
1 stop
ISP12:05 pmIslip Long Island
Sep 18
ISP10:20 amIslip Long Island
7h 40m
1 stop
PDX3:00 pmPortland
$373
Southwest
Sep 11
PDX10:45 pmPortland
12h 45m
1 stop
ISP2:30 pmIslip Long Island
Sep 18
ISP12:35 pmIslip Long Island
11h 10m
2 stops
PDX8:45 pmPortland
$379
Southwest
Sep 8
PDX10:45 pmPortland
8h 30m
1 stop
ISP10:15 amIslip Long Island
Sep 15
ISP6:05 amIslip Long Island
7h 35m
1 stop
PDX10:40 amPortland
$477

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 August 13, 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 Portland - ISP Islip Long Island

PDXISP

Portland

Fri 9/11

10:45 pm-12:05 pm

1 stop10h 20m

Islip Long Island

Fri 9/18

10:20 am-3:00 pm

1 stop7h 40m

$373

PortlandIslip

PDX Portland - ISP Islip Long Island

PDXISP

Portland

Fri 9/11

10:45 pm-2:30 pm

1 stop12h 45m

Islip Long Island

Fri 9/18

12:35 pm-8:45 pm

2 stops11h 10m

$379
Quickest round-trip

PortlandIslip

PDX Portland - ISP Islip Long Island

PDXISP

Portland

Tue 9/8

10:45 pm-10:15 am

1 stop8h 30m

Islip Long Island

Tue 9/15

6:05 am-10:40 am

1 stop7h 35m

$477

PortlandIslip

PDX Portland - ISP Islip Long Island

PDXISP

Portland

Tue 9/8

10:45 pm-10:15 am

1 stop8h 30m

Islip Long Island

Tue 9/15

3:20 pm-10:15 pm

2 stops9h 55m

$482

PortlandIslip

PDX Portland - ISP Islip Long Island

PDXISP

Portland

Tue 9/8

11:30 pm-12:10 pm

2 stops9h 40m

Islip Long Island

Tue 9/15

12:55 pm-8:45 pm

2 stops10h 50m

$487

PortlandIslip

PDX Portland - ISP Islip Long Island

PDXISP

Portland

Sun 11/8

7:00 pm-11:45 am

2 stops13h 45m

Islip Long Island

Sat 11/14

6:00 am-5:45 pm

2 stops14h 45m

$493

PortlandIslip

PDX Portland - ISP Islip Long Island

PDXISP

Portland

Fri 9/11

11:30 pm-2:30 pm

2 stops12h 00m

Islip Long Island

Fri 9/18

12:35 pm-8:45 pm

2 stops11h 10m

$523

PortlandIslip

PDX Portland - ISP Islip Long Island

PDXISP

Portland

Sat 9/26

9:00 am-6:35 pm

3 stops30h 35m

Islip Long Island

Thu 10/1

7:31 am-12:34 am

2 stops20h 03m

$970

PortlandIslip

PDX Portland - ISP Islip Long Island

PDXISP

Portland

Sat 9/26

9:36 pm-10:30 am

1 stop9h 54m

Islip Long Island

Thu 10/1

2:16 pm-8:50 pm

1 stop9h 34m

$1,024

PortlandIslip

PDX Portland - ISP Islip Long Island

PDXISP

Portland

Fri 9/11

4:07 pm-8:59 pm

3 stops25h 52m

Islip Long Island

Fri 9/18

5:34 pm-8:10 pm

2 stops29h 36m

$1,096

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, United Airlines and Delta 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 7 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 30m

Direct flights

None
The fastest flight from Portland to Islip, New York takes 8h 30m
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 30m 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
Southampton
Sag Harbor
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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