ISP - PDX

$361 Find Cheap Flights from Islip to Portland - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$430
Typical prices: $457-$596
Southwest
Mon 12/10Mon 12/17
ISP - PDX • 2 stops
Cheapest one-way
$361
Typical prices: $212-$288
Multiple Airlines
Sun 11/11
ISP - PDX • 3 stops
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Flight Deals

Cheap Flights from Islip to Portland (ISP-PDX)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Islip to Portland

Thu, Dec 10 - Thu, Dec 17
Southwest Logo
12:30 pm - 10:20 pmISP  Islip Long Island-PDX Portland
12h 50m2 stops Baltimore/Washington Denver Intl
Southwest Logo
8:25 am - 11:35 pmPDX  Portland-ISP Islip Long Island
12h 10m2 stops Denver Intl Baltimore/Washington
$430Southwest
Sun, Dec 6 - Mon, Dec 7
Southwest Logo
5:35 am - 1:50 pmISP  Islip Long Island-PDX Portland
11h 15m2 stops Baltimore/Washington Denver Intl
Southwest Logo
6:40 am - 9:45 pmPDX  Portland-ISP Islip Long Island
12h 05m2 stops Sacramento Intl Baltimore/Washington
$457Southwest
Sun, Dec 20 - Sun, Jan 31
Southwest Logo
4:55 pm - 12:15 amISP  Islip Long Island-PDX Portland
10h 20m2 stops Baltimore/Washington Chicago Midway
Southwest Logo
8:00 am - 11:40 pmPDX  Portland-ISP Islip Long Island
12h 40m2 stops San Diego Baltimore/Washington
$495Southwest
Fri, Nov 20 - Fri, Nov 27
Southwest Logo
5:40 pm - 1:25 amISP  Islip Long Island-PDX Portland
10h 45m2 stops Baltimore/Washington Las Vegas Harry Reid Intl
Southwest Logo
8:25 am - 11:35 pmPDX  Portland-ISP Islip Long Island
12h 10m2 stops Denver Intl Baltimore/Washington
$592Southwest
Wed, Nov 11 - Sun, Nov 15
Southwest Logo
12:30 pm - 10:20 pmISP  Islip Long Island-PDX Portland
12h 50m2 stops Baltimore/Washington Denver Intl
Southwest Logo
11:30 pm - 11:45 amPDX  Portland-ISP Islip Long Island
9h 15m2 stops Chicago Midway Baltimore/Washington
$647Southwest
Tue, Nov 10 - Sat, Nov 14
Southwest Logo
6:05 am - 4:45 pmISP  Islip Long Island-PDX Portland
13h 40m2 stops Baltimore/Washington Las Vegas Harry Reid Intl
Southwest Logo
1:40 pm - 11:45 amPDX  Portland-ISP Islip Long Island
19h 05m2 stops Phoenix Sky Harbor Intl Baltimore/Washington
$659Southwest
Booking Insights

Price, demand and travel trends for Islip to Portland flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Islip to Portland?

Round-trip flights from Islip to Portland typically range from $457 to $596. The lowest price found in the past 5 days was $430, on Southwest.

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Key details for Islip to Portland flights

Cheapest flight

$361
One-way flight from Islip to Portland

When to book flights from Islip to Portland

Are your dates flexible? Find out the best times to travel from Islip to Portland based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Islip to Portland flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Do I need a passport to fly from Islip to Portland?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • Have flight prices from Islip to Portland changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route varied from about $430 to $647. That means the highest observed fare was about 50% higher than the lowest one.

  • How are flight prices from Islip to Portland looking right now?

    One-way fares from Islip to Portland are currently higher than usual. Average one-way flight prices are about $440, which is 52% above the typical average for this route.

  • What car rental options are available at Portland Airport (PDX)?

    Portland Airport (PDX) hosts 5 major car rental companies, with daily rates averaging $57 for economy cars. Top options include:

    • Dollar
    • Thrifty
    • Hertz
    • Sixt
    • Payless

  • Which airports can I use when flying from Islip to Portland?

    Flights from Islip to Portland usually depart from Islip Long Island (ISP) and arrive at Portland (PDX).

  • Which airports do connecting flights from Islip to Portland pass through?

    Most connecting flights from Islip to Portland pass through Baltimore/Washington (BWI), which handles 100% of one-stop traffic on this route.

  • Can I save money by using flexible dates for flights from Islip to Portland?

    Yes. Flexible dates can save you up to 15% on flights from Islip to Portland. Tuesday is the cheapest departure day at $508 round-trip on average, while Wednesday is the most expensive at $596, a difference of $88.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What is the time difference between Islip and Portland?

    Portland is 3 hours behind Islip (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Portland?

    Some of the most popular sights in Portland are Moda Center, Oregon Convention Center and Tom McCall Waterfront Park. These are among the most viewed places in Portland on KAYAK.

Your guide to booking Islip to Portland flights

Get tips on when to book, when to fly and what to know before your trip.

More options for your flight from Islip to Portland

Complete your trip to Portland with a hotel stay or car rental

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