$475 Cheap Flights from Portland (PDX) to Knock (NOC)

View $475 flight on Wed, Nov 19, 2025Opens in a new window

Popular airlines from Portland International Airport (PDX) to Knock (NOC-Ireland West)

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Cheap Flights from Portland to Knock (PDX-NOC)

Prices were available within the past 7 days and start at $475 for one-way flights and $690 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Nov 11 - Mon, Nov 17
PDX
Portland
NOC
Knock
$690 Roundtrip, found 6 days ago
$690
Roundtrip
found 6 days ago
Select United flight, departing Tue, Nov 11 from Portland to Knock, returning Mon, Nov 17, priced at $690 found 6 days ago
American Airlines
Sun, Nov 16 - Wed, Dec 3
PDX
Portland
NOC
Knock
$690 Roundtrip, found 6 days ago
$690
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sun, Nov 16 from Portland to Knock, returning Wed, Dec 3, priced at $690 found 6 days ago
American Airlines
Sun, Nov 16 - Tue, Dec 2
PDX
Portland
NOC
Knock
$709 Roundtrip, found 6 days ago
$709
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sun, Nov 16 from Portland to Knock, returning Tue, Dec 2, priced at $709 found 6 days ago
American Airlines
Sun, Nov 16 - Sat, Nov 22
PDX
Portland
NOC
Knock
$710 Roundtrip, found 6 days ago
$710
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sun, Nov 16 from Portland to Knock, returning Sat, Nov 22, priced at $710 found 6 days ago
American Airlines
Sun, Nov 16 - Sun, Nov 23
PDX
Portland
NOC
Knock
$715 Roundtrip, found 6 days ago
$715
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sun, Nov 16 from Portland to Knock, returning Sun, Nov 23, priced at $715 found 6 days ago
Finnair
Sat, May 2 - Fri, May 15
PDX
Portland
NOC
Knock
$787 Roundtrip, found 17 hours ago
$787
Roundtrip
found 17 hours ago
Select Finnair flight, departing Sat, May 2 from Portland to Knock, returning Fri, May 15, priced at $787 found 17 hours ago
Alaska Airlines
Sat, May 2 - Fri, May 15
PDX
Portland
NOC
Knock
$792 Roundtrip, found 17 hours ago
$792
Roundtrip
found 17 hours ago
Select Alaska Airlines flight, departing Sat, May 2 from Portland to Knock, returning Fri, May 15, priced at $792 found 17 hours ago
Alaska Airlines
Sat, May 2 - Fri, May 15
PDX
Portland
NOC
Knock
$797 Roundtrip, found 17 hours ago
$797
Roundtrip
found 17 hours ago
Select Alaska Airlines flight, departing Sat, May 2 from Portland to Knock, returning Fri, May 15, priced at $797 found 17 hours ago
Alaska Airlines
Sat, May 2 - Fri, May 15
PDX
Portland
NOC
Knock
$798 Roundtrip, found 17 hours ago
$798
Roundtrip
found 17 hours ago
Select Alaska Airlines flight, departing Sat, May 2 from Portland to Knock, returning Fri, May 15, priced at $798 found 17 hours ago
Aer Lingus
Sat, May 2 - Fri, May 15
PDX
Portland
NOC
Knock
$802 Roundtrip, found 17 hours ago
$802
Roundtrip
found 17 hours ago
Select Aer Lingus flight, departing Sat, May 2 from Portland to Knock, returning Fri, May 15, priced at $802 found 17 hours ago

Frequently asked questions

How much does a flight from Portland Intl. Airport (PDX) to Ireland West Airport (NOC) cost?
Snag a cheap one-way flight from $475 or cheap return flight from $690 from Portland Intl. Airport (PDX) to Ireland West Airport (NOC) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Portland Intl. Airport (PDX) to Ireland West Airport (NOC)?
The cheapest month to fly from PDX to NOC is November, when demand is low. Off-peak months are typically when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Ireland West Airport (NOC)?
To find the cheapest airline that'll fly you from PDX to NOC, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Portland Intl. Airport (PDX) to Ireland West Airport (NOC)?
You'll have to catch a flight with a layover if you're traveling from Portland Intl. Airport (PDX) to Ireland West Airport (NOC). There are no daily direct flights on this route. However, just filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from PDX to NOC?
Usually you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can vary based on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Portland Intl. Airport (PDX) to Ireland West Airport (NOC)?
To avoid potential delays on the Portland Intl. Airport (PDX) to Ireland West Airport (NOC) route, aim to fly before 3 PM. Later departures have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Portland Intl. Airport (PDX) to Ireland West Airport (NOC) last-minute?
Booking your ticket from PDX to NOC shortly before your getaway is typically more expensive. But if you're flexible with your travel times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book a PDX to NOC flight and hotel package?
You'll typically save money by booking a PDX to NOC flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. Once you've chosen your ideal accommodations and flights, you can add extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Ireland West Airport (NOC)?
If you reserved your PDX to NOC flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you want more information.

Travel information

Origin airport
Portland Intl.
Destination airport
Ireland West
Airlines serving
British Airways
Roundtrip price
$689
Distance
4540 mi

Book with confidence

Portland to Knock Flights

The cheapest times to fly from Portland to Knock

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Portland to Knock are during the month of November. You can find some of the cheapest flights from Portland to Knock with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Portland to Knock

Sunday is one of the best days to book for cheap flights from Portland to Knock: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Portland to Knock

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Portland to Knock in 2025. You can also book with separate airlines for your outbound and return journeys, from $475 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Portland to Knock flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Portland to Knock airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Portland to Knock Flights

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*Available to One Key members.