$543 Cheap Flights from Portland (PDX) to Donegal (CFN)

View $543 flight on Fri, Nov 14, 2025Opens in a new window

Popular airlines from Portland International Airport (PDX) to Donegal (CFN)

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Portland to Donegal (PDX-CFN)

Prices were available within the past 7 days and start at $543 for one-way flights and $783 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Iberia
Fri, Nov 14 - Wed, Nov 19
PDX
Portland
CFN
Donegal
$783 Roundtrip, found 3 days ago
$783
Roundtrip
found 3 days ago
Select Iberia flight, departing Fri, Nov 14 from Portland to Donegal, returning Wed, Nov 19, priced at $783 found 3 days ago
American Airlines
Fri, Nov 14 - Wed, Nov 19
PDX
Portland
CFN
Donegal
$788 Roundtrip, found 3 days ago
$788
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Nov 14 from Portland to Donegal, returning Wed, Nov 19, priced at $788 found 3 days ago
American Airlines
Fri, Nov 14 - Wed, Nov 19
PDX
Portland
CFN
Donegal
$789 Roundtrip, found 3 days ago
$789
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Nov 14 from Portland to Donegal, returning Wed, Nov 19, priced at $789 found 3 days ago
American Airlines
Fri, Nov 14 - Wed, Nov 19
PDX
Portland
CFN
Donegal
$789 Roundtrip, found 3 days ago
$789
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Nov 14 from Portland to Donegal, returning Wed, Nov 19, priced at $789 found 3 days ago
Alaska Airlines
Thu, Nov 13 - Wed, Nov 19
PDX
Portland
CFN
Donegal
$790 Roundtrip, found 6 days ago
$790
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Nov 13 from Portland to Donegal, returning Wed, Nov 19, priced at $790 found 6 days ago
American Airlines
Fri, Nov 14 - Wed, Nov 19
PDX
Portland
CFN
Donegal
$791 Roundtrip, found 3 days ago
$791
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Nov 14 from Portland to Donegal, returning Wed, Nov 19, priced at $791 found 3 days ago
American Airlines
Fri, Nov 14 - Wed, Nov 19
PDX
Portland
CFN
Donegal
$794 Roundtrip, found 3 days ago
$794
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Nov 14 from Portland to Donegal, returning Wed, Nov 19, priced at $794 found 3 days ago
American Airlines
Fri, Nov 14 - Wed, Nov 19
PDX
Portland
CFN
Donegal
$794 Roundtrip, found 3 days ago
$794
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Nov 14 from Portland to Donegal, returning Wed, Nov 19, priced at $794 found 3 days ago
United
Fri, Nov 14 - Wed, Nov 19
PDX
Portland
CFN
Donegal
$801 Roundtrip, found 3 days ago
$801
Roundtrip
found 3 days ago
Select United flight, departing Fri, Nov 14 from Portland to Donegal, returning Wed, Nov 19, priced at $801 found 3 days ago
British Airways
Fri, Nov 14 - Wed, Nov 19
PDX
Portland
CFN
Donegal
$3,061 Roundtrip, found 3 days ago
$3,061
Roundtrip
found 3 days ago
Select British Airways flight, departing Fri, Nov 14 from Portland to Donegal, returning Wed, Nov 19, priced at $3,061 found 3 days ago
Flights from Portland (PDX) to Donegal (CFN)
Origin airport
Portland Intl.
Destination airport
Donegal
Roundtrip price
$782
Distance
4499 mi

Portland to Donegal Flights

The cheapest times to fly from Portland to Donegal

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 Donegal are during the month of November. You can find some of the cheapest flights from Portland to Donegal with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Portland to Donegal

Sunday is one of the best days to book for cheap flights from Portland to Donegal: 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 Donegal

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 Donegal in 2025. You can also book with separate airlines for your outbound and return journeys, from $543 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 Donegal 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 Donegal 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 Donegal Airport (CFN) cost?
Grab a cheap one-way flight from $543 or cheap return flight from $783 from Portland Intl. Airport (PDX) to Donegal Airport (CFN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Portland Intl. Airport (PDX) to Donegal Airport (CFN)?
Planning your trip for November can help you save, as it's the cheapest month for flights between PDX and CFN. You'll usually find the lowest prices during off-peak months.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Donegal Airport (CFN)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest PDX to CFN flight.
How many flights per day from Portland Intl. Airport (PDX) to Donegal Airport (CFN)?
There aren't any daily nonstop flights departing from Portland Intl. Airport (PDX) to Donegal Airport (CFN). But you can book flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be cruising above the clouds before you know it.
What day of the week has the most flights from PDX to CFN?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can vary depending on a range of factors, including the airline and season.*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 Donegal Airport (CFN)?
To touch down at Donegal Airport (CFN) on schedule, book a flight that takes off from Portland Intl. Airport (PDX) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Donegal Airport (CFN) last-minute?
Last-minute bookings from PDX to CFN are typically more expensive. To lock in the best prices, start looking for flights ahead of time. That said, if you're flexible with your travel plans, you may find a cheap ticket just before your departure.
Is it cheaper to book a PDX to CFN flight and hotel package?
Compared with arranging hotels and flights separately, booking a PDX to CFN flight and hotel package with Expedia could lead to significant savings. What's more, having it all in one place will take the stress out of planning your trip. Just secure your flights and choose from our extensive range of hotels, then personalize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Donegal Airport (CFN)?
In most instances, you can modify or cancel your PDX to CFN flight. However, there may be additional charges, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you need more details, head to our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.