What airlines fly to Portland?

United Airlines, Alaska Airlines and Delta are the top three most popular airlines that fly to Portland from Islip, New York according to our data. United Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Portland. Keep in mind that there are 6 different airlines that fly to Portland on a routine basis, so you have a few additional options to choose from.

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.

$497 Cheap Flights from Islip, New York to Portland in 2026

Find the cheapest flights from Islip, New York to Portland

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:35 pm - 8:45 pmISP Islip Long Island-PDX Portland

11h 10m2 stops Baltimore/Washington Chicago Midway

10:45 pm - 10:15 amPDX Portland-ISP Islip Long Island

8h 30m1 stop Baltimore/Washington

$497Southwest

Fri, Sep 25 - Tue, Sep 29

12:35 pm - 8:45 pmISP Islip Long Island-PDX Portland

11h 10m2 stops Baltimore/Washington Chicago Midway

11:30 pm - 12:10 pmPDX Portland-ISP Islip Long Island

9h 40m2 stops Chicago Midway Baltimore/Washington

$502Southwest

Fri, Sep 25 - Tue, Sep 29

10:20 am - 3:00 pmISP Islip Long Island-PDX Portland

7h 40m1 stop Baltimore/Washington

10:45 pm - 10:15 amPDX Portland-ISP Islip Long Island

8h 30m1 stop Baltimore/Washington

$516Southwest

Fri, Sep 25 - Tue, Sep 29

12:55 pm - 8:45 pmISP Islip Long Island-PDX Portland

10h 50m2 stops Baltimore/Washington San Jose

10:45 pm - 9:40 amPDX Portland-ISP Islip Long Island

7h 55m1 stop Baltimore/Washington

$548Southwest

Wed, Sep 23 - Sun, Sep 27

12:55 pm - 8:45 pmISP Islip Long Island-PDX Portland

10h 50m2 stops Baltimore/Washington San Jose

11:30 pm - 12:35 pmPDX Portland-ISP Islip Long Island

10h 05m2 stops Chicago Midway Baltimore/Washington

$553Southwest

Wed, Sep 23 - Sun, Sep 27

6:05 am - 10:40 amISP Islip Long Island-PDX Portland

7h 35m1 stop Baltimore/Washington

10:45 pm - 9:55 amPDX Portland-ISP Islip Long Island

8h 10m1 stop Baltimore/Washington

$573Southwest

Tue, Sep 15 - Sat, Sep 19

6:05 am - 10:40 amISP Islip Long Island-PDX Portland

7h 35m1 stop Baltimore/Washington

10:45 pm - 9:40 amPDX Portland-ISP Islip Long Island

7h 55m1 stop Baltimore/Washington

$576Southwest

Wed, Sep 23 - Sun, Sep 27

6:05 am - 3:00 pmISP Islip Long Island-PDX Portland

11h 55m2 stops Baltimore/Washington Denver Intl

10:45 pm - 9:55 amPDX Portland-ISP Islip Long Island

8h 10m1 stop Baltimore/Washington

$578Southwest

Tue, Sep 15 - Sat, Sep 19

3:20 pm - 11:15 pmISP Islip Long Island-PDX Portland

10h 55m2 stops Baltimore/Washington Chicago Midway

5:30 pm - 9:55 amPDX Portland-ISP Islip Long Island

13h 25m2 stops San Jose Baltimore/Washington

$583Southwest

Tue, Sep 15 - Sat, Sep 19

6:05 am - 10:40 amISP Islip Long Island-PDX Portland

7h 35m1 stop Baltimore/Washington

10:45 pm - 9:55 amPDX Portland-ISP Islip Long Island

8h 10m1 stop Baltimore/Washington

$597Southwest

Tue, Sep 15 - Sat, Sep 19

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Southwest flights from Islip, New York to Portland

Our best Southwest deals on Islip, New York to Portland flight tickets

Southwest

Sep 25

ISP12:35 pmIslip Long Island

11h 10m

2 stops

PDX8:45 pmPortland

Sep 29

PDX10:45 pmPortland

8h 30m

1 stop

ISP10:15 amIslip Long Island

$497

Southwest

Sep 25

ISP12:35 pmIslip Long Island

11h 10m

2 stops

PDX8:45 pmPortland

Sep 29

PDX11:30 pmPortland

9h 40m

2 stops

ISP12:10 pmIslip Long Island

$502

Southwest

Sep 25

ISP10:20 amIslip Long Island

7h 40m

1 stop

PDX3:00 pmPortland

Sep 29

PDX10:45 pmPortland

8h 30m

1 stop

ISP10:15 amIslip Long Island

$516

momondo Fare Finder

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

IslipPortland

ISP Islip Long Island - PDX Portland

ISPPDX

Islip Long Island

Fri 9/25

12:35 pm-8:45 pm

2 stops11h 10m

Portland

Tue 9/29

10:45 pm-10:15 am

1 stop8h 30m

$497

IslipPortland

ISP Islip Long Island - PDX Portland

ISPPDX

Islip Long Island

Fri 9/25

12:35 pm-8:45 pm

2 stops11h 10m

Portland

Tue 9/29

11:30 pm-12:10 pm

2 stops9h 40m

$502

IslipPortland

ISP Islip Long Island - PDX Portland

ISPPDX

Islip Long Island

Fri 9/25

10:20 am-3:00 pm

1 stop7h 40m

Portland

Tue 9/29

10:45 pm-10:15 am

1 stop8h 30m

$516

IslipPortland

ISP Islip Long Island - PDX Portland

ISPPDX

Islip Long Island

Wed 9/23

12:55 pm-8:45 pm

2 stops10h 50m

Portland

Sun 9/27

10:45 pm-9:40 am

1 stop7h 55m

$548

IslipPortland

ISP Islip Long Island - PDX Portland

ISPPDX

Islip Long Island

Wed 9/23

12:55 pm-8:45 pm

2 stops10h 50m

Portland

Sun 9/27

11:30 pm-12:35 pm

2 stops10h 05m

$553

IslipPortland

ISP Islip Long Island - PDX Portland

ISPPDX

Islip Long Island

Tue 9/15

6:05 am-10:40 am

1 stop7h 35m

Portland

Sat 9/19

10:45 pm-9:55 am

1 stop8h 10m

$573

Quickest round-trip

IslipPortland

ISP Islip Long Island - PDX Portland

ISPPDX

Islip Long Island

Wed 9/23

6:05 am-10:40 am

1 stop7h 35m

Portland

Sun 9/27

10:45 pm-9:40 am

1 stop7h 55m

$576

IslipPortland

ISP Islip Long Island - PDX Portland

ISPPDX

Islip Long Island

Tue 9/15

6:05 am-3:00 pm

2 stops11h 55m

Portland

Sat 9/19

10:45 pm-9:55 am

1 stop8h 10m

$578

IslipPortland

ISP Islip Long Island - PDX Portland

ISPPDX

Islip Long Island

Tue 9/15

3:20 pm-11:15 pm

2 stops10h 55m

Portland

Sat 9/19

5:30 pm-9:55 am

2 stops13h 25m

$583

IslipPortland

ISP Islip Long Island - PDX Portland

ISPPDX

Islip Long Island

Tue 9/15

6:05 am-10:40 am

1 stop7h 35m

Portland

Sat 9/19

10:45 pm-9:55 am

1 stop8h 10m

$597

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

Prices

Airlines

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 $413. 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 $509.

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 $433. In the evening is when there is more demand to fly to Portland, so prices are often more expensive at around $513 per ticket.

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

You could potentially save up to 26% 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

Best Price Found	$497
Fastest flight time	7h 35m
Direct flights	None

The best flight deal from Islip, New York to Portland found on momondo in the last 72 hours is $497

The fastest flight from Islip, New York to Portland takes 7h 35m

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 7h 35m.
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.

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Depoe Bay

Newberg

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Troutdale

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Wilsonville

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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.

An easier way to manage your Portland trip

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Cheap flights from Islip, New York to Portland from $497

This is the cheapest round-trip 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 9/25. 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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Southwest flights from Islip, New York to Portland

Our best Southwest deals on Islip, New York to Portland flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Islip, New York to Portland that are best for you.

See travel insights to Portland from

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

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

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

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

What airlines fly to Portland?

When to book flights from Islip, New York to Portland

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

Best Price Found

Fastest flight time

Direct flights

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

Traveling to a place near Portland?

Why use momondo?

An easier way to manage your Portland trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Oregon

Fly your favorite airline to Portland

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Portland

List of cabin classes available on flights landing in Portland. Availability may vary depending on flight origin and airline.

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Popular flights according to clicks in the last 7 days on momondo

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