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Cheap flights from Islip, New York to Portland from $192

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Islip, New York to Portland departing on 6/9. 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 Islip, New York to Portland

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
4:10 pm - 11:10 pm
ISP
-
PDX
10h 00m
2 stops
Southwest Logo
9:20 pm - 8:05 am
PDX
-
ISP
7h 45m
1 stop
$430Southwest
Tue, Jun 2 - Tue, Jun 9
Southwest Logo
9:00 am - 6:30 pm
ISP
-
PDX
12h 30m
2 stops
Southwest Logo
5:55 pm - 8:05 am
PDX
-
ISP
11h 10m
2 stops
$435Southwest
Tue, Jun 2 - Tue, Jun 9
Southwest Logo
5:30 am - 12:30 pm
ISP
-
PDX
10h 00m
1 stop
Southwest Logo
10:45 pm - 9:40 am
PDX
-
ISP
7h 55m
1 stop
$467Southwest
Sat, Aug 29 - Sun, Sep 6
Southwest Logo
8:55 am - 3:25 pm
ISP
-
PDX
9h 30m
1 stop
Southwest Logo
11:30 pm - 2:50 pm
PDX
-
ISP
12h 20m
2 stops
$472Southwest
Tue, Jul 28 - Fri, Jul 31
Southwest Logo
9:10 am - 4:20 pm
ISP
-
PDX
10h 10m
1 stop
Southwest Logo
9:20 pm - 8:05 am
PDX
-
ISP
7h 45m
1 stop
$477Southwest
Thu, Jul 9 - Mon, Jul 13
Southwest Logo
9:20 am - 6:45 pm
ISP
-
PDX
12h 25m
2 stops
Southwest Logo
8:50 am - 10:10 pm
PDX
-
ISP
10h 20m
2 stops
$597Southwest
Sat, May 16 - Wed, May 20
Multiple Airlines Logo
7:25 am - 1:10 pm
ISP
-
PDX
8h 45m
1 stop
Multiple Airlines Logo
9:46 pm - 11:05 am
PDX
-
ISP
10h 19m
1 stop
$969Multiple Airlines
Tue, Jun 2 - Tue, Jun 9
Multiple Airlines Logo
9:59 am - 8:47 pm
ISP
-
PDX
13h 48m
1 stop
Multiple Airlines Logo
9:46 pm - 11:05 am
PDX
-
ISP
10h 19m
1 stop
$1,189Multiple Airlines
Tue, May 19 - Sat, May 23
Multiple Airlines Logo
12:30 pm - 8:47 pm
ISP
-
PDX
11h 17m
1 stop
Multiple Airlines Logo
2:30 pm - 1:39 pm
PDX
-
ISP
20h 09m
2 stops
$1,207Multiple Airlines
Tue, May 19 - Sat, May 23
Multiple Airlines Logo
9:59 am - 8:47 pm
ISP
-
PDX
13h 48m
1 stop
Multiple Airlines Logo
8:37 am - 7:45 pm
PDX
-
ISP
8h 08m
1 stop
$1,289Multiple Airlines
Sat, May 16 - Wed, May 20

Southwest flights from Islip, New York to Portland

Our best Southwest deals on Islip, New York to Portland flight tickets
Southwest
Jun 2
ISP4:10 pmIslip Long Island
10h 00m
2 stops
PDX11:10 pmPortland
Jun 9
PDX9:20 pmPortland
7h 45m
1 stop
ISP8:05 amIslip Long Island
$430
Southwest
Jun 2
ISP9:00 amIslip Long Island
12h 30m
2 stops
PDX6:30 pmPortland
Jun 9
PDX5:55 pmPortland
11h 10m
2 stops
ISP8:05 amIslip Long Island
$435
Southwest
Aug 29
ISP5:30 amIslip Long Island
10h 00m
1 stop
PDX12:30 pmPortland
Sep 6
PDX10:45 pmPortland
7h 55m
1 stop
ISP9:40 amIslip Long Island
$467

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York to Portland 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 May 4, 2026.
Use the filters below to find and compare flights from Islip, New York to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

IslipPortland

ISP - PDX

ISPPDX

Islip Long Island

Tue 6/2

4:10 pm-11:10 pm

2 stops10h 00m

Portland

Tue 6/9

9:20 pm-8:05 am

1 stop7h 45m

$430

IslipPortland

ISP - PDX

ISPPDX

Islip Long Island

Tue 6/2

9:00 am-6:30 pm

2 stops12h 30m

Portland

Tue 6/9

5:55 pm-8:05 am

2 stops11h 10m

$435

IslipPortland

ISP - PDX

ISPPDX

Islip Long Island

Sat 8/29

5:30 am-12:30 pm

1 stop10h 00m

Portland

Sun 9/6

10:45 pm-9:40 am

1 stop7h 55m

$467

IslipPortland

ISP - PDX

ISPPDX

Islip Long Island

Tue 7/28

8:55 am-3:25 pm

1 stop9h 30m

Portland

Fri 7/31

11:30 pm-2:50 pm

2 stops12h 20m

$472

IslipPortland

ISP - PDX

ISPPDX

Islip Long Island

Thu 7/9

9:10 am-4:20 pm

1 stop10h 10m

Portland

Mon 7/13

9:20 pm-8:05 am

1 stop7h 45m

$477

IslipPortland

ISP - PDX

ISPPDX

Islip Long Island

Sat 5/16

9:20 am-6:45 pm

2 stops12h 25m

Portland

Wed 5/20

8:50 am-10:10 pm

2 stops10h 20m

$597

IslipPortland

ISP - PDX

ISPPDX

Islip Long Island

Tue 6/2

7:25 am-1:10 pm

1 stop8h 45m

Portland

Tue 6/9

9:46 pm-11:05 am

1 stop10h 19m

$969

IslipPortland

ISP - PDX

ISPPDX

Islip Long Island

Tue 5/19

9:59 am-8:47 pm

1 stop13h 48m

Portland

Sat 5/23

9:46 pm-11:05 am

1 stop10h 19m

$1,189

IslipPortland

ISP - PDX

ISPPDX

Islip Long Island

Tue 5/19

12:30 pm-8:47 pm

1 stop11h 17m

Portland

Sat 5/23

2:30 pm-1:39 pm

2 stops20h 09m

$1,207

IslipPortland

ISP - PDX

ISPPDX

Islip Long Island

Sat 5/16

9:59 am-8:47 pm

1 stop13h 48m

Portland

Wed 5/20

8:37 am-7:45 pm

1 stop8h 08m

$1,289

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portland from

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

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 Portland?

The cheapest day to depart on your flight to Portland is on a Wednesday when prices can be found for as low as $392. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Portland is Monday, with ticket prices averaging around $486.

What is the cheapest time of day to depart on your flight to Portland?

The cheapest time of day to fly to Portland is in the morning when flights can be purchased for as low as $411. At noon is when there is more demand to fly to Portland, so prices are often more expensive at around $507 per ticket.

Can stopping save me money on Islip, New York to Portland flights?

You could potentially save up to 18% on your flight if you consider stops on a Islip, New York to Portland flight.

When to book flights from Islip, New York to Portland

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

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

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

Fastest flight time

9h 30m

Direct flights

None
The fastest flight from Islip, New York to Portland takes 9h 30m
There are no direct flights from Islip, New York to Portland. There are no popular flight routes from Islip, New York to Portland.
Search flight deals

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

  • How far is Islip Long Island to Portland by plane?

    The distance between Islip Long Island and Portland is about 2474.8 mi. A reasonable flight in good conditions will take 9h 30m.

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

    Prices for flights from Islip Long Island Airport to Portland Airport were last updated today.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Islip Long Island Airport to Portland Airport.

  • What documentation or ID do you need to fly to Portland Airport?

    The required travel and health documents for your Portland Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Portland Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Lincoln City
Seaside
Cannon Beach
Vancouver
Salem
Astoria
Long Beach
Rockaway Beach
Beaverton
Depoe Bay
Hillsboro
Tigard
Longview
Hood River
Troutdale
Newberg
McMinnville
The Dalles
Manzanita
Pacific City

Why use momondo?

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

Finding the right flight to Portland from Islip is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Portland quick and easy, saving you time and money.

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

Yes. All flights to Portland from Islip on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Portland from Islip.

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

Price alerts on flights to Portland from Islip 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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