$445 Cheap Flights from Portland (PDX) to Bilbao (BIO)

View $445 flight on Thu, Dec 25, 2025Opens in a new window

Popular airlines from Portland International Airport (PDX) to Bilbao Airport (BIO)

Cheap Flights from Portland to Bilbao (PDX-BIO)

Prices were available within the past 7 days and start at $445 for one-way flights and $518 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Mon, Nov 17 - Sun, Nov 23
PDX
Portland
BIO
Bilbao
$518 Roundtrip, found 2 days ago
$518
Roundtrip
found 2 days ago
Select Air Canada flight, departing Mon, Nov 17 from Portland to Bilbao, returning Sun, Nov 23, priced at $518 found 2 days ago
Air Canada
Sun, Nov 23 - Fri, Dec 12
PDX
Portland
BIO
Bilbao
$520 Roundtrip, found 2 days ago
$520
Roundtrip
found 2 days ago
Select Air Canada flight, departing Sun, Nov 23 from Portland to Bilbao, returning Fri, Dec 12, priced at $520 found 2 days ago
Air Canada
Sun, Feb 15 - Sun, Feb 22
PDX
Portland
BIO
Bilbao
$522 Roundtrip, found 4 days ago
$522
Roundtrip
found 4 days ago
Select Air Canada flight, departing Sun, Feb 15 from Portland to Bilbao, returning Sun, Feb 22, priced at $522 found 4 days ago
Air Canada
Sat, Feb 14 - Mon, Feb 23
PDX
Portland
BIO
Bilbao
$523 Roundtrip, found 1 day ago
$523
Roundtrip
found 1 day ago
Select Air Canada flight, departing Sat, Feb 14 from Portland to Bilbao, returning Mon, Feb 23, priced at $523 found 1 day ago
Lufthansa
Wed, Dec 10 - Fri, Jan 30
PDX
Portland
BIO
Bilbao
$523 Roundtrip, found 3 days ago
$523
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Wed, Dec 10 from Portland to Bilbao, returning Fri, Jan 30, priced at $523 found 3 days ago
Lufthansa
Fri, Nov 14 - Tue, Nov 18
PDX
Portland
BIO
Bilbao
$524 Roundtrip, found 3 days ago
$524
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Fri, Nov 14 from Portland to Bilbao, returning Tue, Nov 18, priced at $524 found 3 days ago
Delta
Mon, Dec 8 - Tue, Dec 23
PDX
Portland
BIO
Bilbao
$525 Roundtrip, found 1 day ago
$525
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Dec 8 from Portland to Bilbao, returning Tue, Dec 23, priced at $525 found 1 day ago
Lufthansa
Fri, Nov 14 - Tue, Nov 18
PDX
Portland
BIO
Bilbao
$532 Roundtrip, found 3 days ago
$532
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Fri, Nov 14 from Portland to Bilbao, returning Tue, Nov 18, priced at $532 found 3 days ago
Swiss International Air Lines
Wed, Jan 28 - Wed, Feb 4
PDX
Portland
BIO
Bilbao
$539 Roundtrip, found 6 days ago
$539
Roundtrip
found 6 days ago
Select Swiss International Air Lines flight, departing Wed, Jan 28 from Portland to Bilbao, returning Wed, Feb 4, priced at $539 found 6 days ago
United
Thu, Nov 27 - Wed, Dec 10
PDX
Portland
BIO
Bilbao
$546 Roundtrip, found 1 day ago
$546
Roundtrip
found 1 day ago
Select United flight, departing Thu, Nov 27 from Portland to Bilbao, returning Wed, Dec 10, priced at $546 found 1 day ago

Alternative airports near Bilbao

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Bilbao Airport BIO. Cheapest and Closest option available. Average driving time to city center is 13 minutes. Flights from $1,060
BIO
Bilbao Airport
CheapestClosest
Average driving time to city center13 min
Flights from $1,060
Flights from Portland (PDX) to Bilbao (BIO)
Origin airport
Portland Intl.
Destination airport
Bilbao
Airlines serving
Aer Lingus, Air Canada, Air Europa, Brussels Airlines, Finnair, Iberia, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines
Roundtrip price
$517
Distance
5267 mi

Portland to Bilbao Flights

The cheapest times to fly from Portland to Bilbao

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

 

The best time to book a flight from Portland to Bilbao

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

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 Bilbao in 2025. You can also book with separate airlines for your outbound and return journeys, from $445 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 Bilbao 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 Bilbao 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 Bilbao Airport (BIO) cost?
Lock in a cheap one-way flight from $445 or cheap return flight from $518 from Portland Intl. Airport (PDX) to Bilbao Airport (BIO) 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 Bilbao Airport (BIO)?
Planning your trip for November may help you find better deals, as it's the cheapest month for flights between PDX and BIO. You'll often find the lowest prices during off-peak months.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Bilbao Airport (BIO)?
To find the cheapest airline flying from PDX to BIO, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Portland Intl. Airport (PDX) to Bilbao Airport (BIO)?
You'll need to take a flight with a layover when traveling from Portland Intl. Airport (PDX) to Bilbao Airport (BIO). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from PDX to BIO?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*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 Bilbao Airport (BIO)?
To arrive at Bilbao Airport (BIO) on time, opt for a flight that leaves from Portland Intl. Airport (PDX) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Bilbao Airport (BIO) last-minute?
Waiting until just before your trip to book your flight from PDX to BIO generally means paying more. While you might find some last-minute discounts, they're not always guaranteed. Keep your travel schedule open for a better chance of snagging a bargain.
Is it cheaper to book a PDX to BIO flight and hotel package?
You can save money by securing a PDX to BIO flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. After choosing your ideal accommodations and flights, you can add extras such as activities, tours and car rentals.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Bilbao Airport (BIO)?
If you booked your PDX to BIO flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond that time. 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.