$596 Cheap Flights from Portland (PDX) to Knock (NOC)

View $596 flight on Fri, Jul 18, 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 $596 for one-way flights and $1,549 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Fri, Jul 18 - Mon, Jul 21
PDX
Portland
NOC
Knock
$1,549 Roundtrip, found 5 days ago
$1,549
Roundtrip
found 5 days ago
Select Air Canada flight, departing Fri, Jul 18 from Portland to Knock, returning Mon, Jul 21, priced at $1,549 found 5 days ago
Virgin Atlantic
Sun, Jun 29 - Thu, Jul 3
PDX
Portland
NOC
Knock
$1,573 Roundtrip, found 6 days ago
$1,573
Roundtrip
found 6 days ago
Select Virgin Atlantic flight, departing Sun, Jun 29 from Portland to Knock, returning Thu, Jul 3, priced at $1,573 found 6 days ago
Alaska Airlines
Fri, Jul 18 - Mon, Jul 21
PDX
Portland
NOC
Knock
$1,605 Roundtrip, found 5 days ago
$1,605
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Jul 18 from Portland to Knock, returning Mon, Jul 21, priced at $1,605 found 5 days ago
Air Canada
Fri, Jul 18 - Mon, Jul 21
PDX
Portland
NOC
Knock
$1,649 Roundtrip, found 5 days ago
$1,649
Roundtrip
found 5 days ago
Select Air Canada flight, departing Fri, Jul 18 from Portland to Knock, returning Mon, Jul 21, priced at $1,649 found 5 days ago
Air Canada
Fri, Jul 18 - Mon, Jul 21
PDX
Portland
NOC
Knock
$1,655 Roundtrip, found 5 days ago
$1,655
Roundtrip
found 5 days ago
Select Air Canada flight, departing Fri, Jul 18 from Portland to Knock, returning Mon, Jul 21, priced at $1,655 found 5 days ago
Air Canada
Fri, Jul 18 - Mon, Jul 21
PDX
Portland
NOC
Knock
$1,667 Roundtrip, found 5 days ago
$1,667
Roundtrip
found 5 days ago
Select Air Canada flight, departing Fri, Jul 18 from Portland to Knock, returning Mon, Jul 21, priced at $1,667 found 5 days ago
Finnair
Fri, Jul 18 - Mon, Jul 21
PDX
Portland
NOC
Knock
$1,684 Roundtrip, found 5 days ago
$1,684
Roundtrip
found 5 days ago
Select Finnair flight, departing Fri, Jul 18 from Portland to Knock, returning Mon, Jul 21, priced at $1,684 found 5 days ago
Alaska Airlines
Fri, Jul 18 - Mon, Jul 21
PDX
Portland
NOC
Knock
$1,694 Roundtrip, found 5 days ago
$1,694
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Jul 18 from Portland to Knock, returning Mon, Jul 21, priced at $1,694 found 5 days ago
Alaska Airlines
Fri, Jul 18 - Mon, Jul 21
PDX
Portland
NOC
Knock
$1,698 Roundtrip, found 5 days ago
$1,698
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Jul 18 from Portland to Knock, returning Mon, Jul 21, priced at $1,698 found 5 days ago
British Airways
Wed, Jul 2 - Sun, Jul 6
PDX
Portland
NOC
Knock
$4,799 Roundtrip, found 3 days ago
$4,799
Roundtrip
found 3 days ago
Select British Airways flight, departing Wed, Jul 2 from Portland to Knock, returning Sun, Jul 6, priced at $4,799 found 3 days ago
Flights from Portland (PDX) to Knock (NOC)
Origin airport
Portland Intl.
Destination airport
Ireland West
Roundtrip price
$1,548
Distance
4540 mi

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 July. 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 $596 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.

 

Frequently asked questions

How much does a flight from Portland Intl. Airport (PDX) to Ireland West Airport (NOC) cost?
Discover the latest flight deals from PDX to NOC by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from PDX to NOC?
The cheapest flights from PDX to NOC are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from PDX to NOC?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from PDX to NOC. Sort your results by "Price (lowest to highest)" to snap up a great deal.
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.

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*Available to One Key members.