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Bilbao

$297+ Cheap flights from Portland (PDX) to Bilbao (BIO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — BIO
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Portland to Bilbao

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Bilbao (BIO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$652
(Gotogate)

One-way from

$297
(Kiwi.com)

Popular in

May

Cheapest in

November

Average price

$763
From Portland to Bilbao
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One-way flight from Portland to Bilbao
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Highest demand for flights based on searches. 21% potential increase in price ($277 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($55 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Portland to Bilbao

Cheapest flights from Portland to Bilbao
Explore the most affordable flight options available from Portland to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Gotogate deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:15 amPDX - BIO
2 stops32h 50mMultiple Airlines
Sun 11/25:45 amBIO - PDX
2 stops35h 30mMultiple Airlines
Deal found 9/10$652
This Air France deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/161:48 pmPDX - BIO
2 stops17h 52mMultiple Airlines
Sat 9/276:50 amBIO - PDX
1 stop13h 30mMultiple Airlines
Deal found 9/9$689
This KLM deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/262:25 pmPDX - BIO
1 stop12h 55mKLM
Sun 11/211:55 amBIO - PDX
1 stop32h 30mKLM
Deal found 9/10$726
This Mytrip deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/202:45 pmPDX - BIO
3 stops22h 45mMultiple Airlines
Sun 11/309:05 pmBIO - PDX
3 stops28h 55mMultiple Airlines
Deal found 9/11$759
This Air Canada deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:15 amPDX - BIO
3 stops26h 25mAir Canada
Sun 11/25:45 amBIO - PDX
3 stops35h 30mAir Canada
Deal found 9/10$820

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Bilbao that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Portland to Bilbao that are best for you.

Fly from

Portland

Fly to

Bilbao

Route

Depart

Return

Price

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Sun 10/26

6:15 am-11:05 pm

2 stops32h 50m

Bilbao

Sun 11/2

5:45 am-9:15 am

2 stops35h 30m

$652

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Sun 10/26

2:25 pm-11:20 am

1 stop12h 55m

Bilbao

Sun 11/2

11:55 am-11:25 am

1 stop32h 30m

$726

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Thu 11/20

2:45 pm-10:30 pm

3 stops22h 45m

Bilbao

Sun 11/30

9:05 pm-5:00 pm

3 stops28h 55m

$759

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Sun 10/26

6:15 am-4:40 pm

3 stops26h 25m

Bilbao

Sun 11/2

5:45 am-9:15 am

3 stops35h 30m

$820

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Thu 11/20

8:20 am-10:50 am

2 stops17h 30m

Bilbao

Sun 11/30

12:45 pm-11:03 am

3 stops55h 18m

$1,004

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Tue 10/14

12:43 pm-8:05 am

3 stops58h 22m

$297

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Thu 10/16

12:43 pm-8:15 am

3 stops58h 32m

$299

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Wed 10/8

12:30 pm-5:15 pm

2 stops43h 45m

$337

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Tue 10/7

5:45 pm-7:05 pm

2 stops40h 20m

$369

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Thu 11/20

11:00 pm-10:35 pm

3 stops38h 35m

$391

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 11 results
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Best time to book a flight from Portland to Bilbao

Have a flexible travel schedule? Discover the best time to fly to Bilbao from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portland to Bilbao

What is the cheapest time of day to fly from PDX to BIO?

Find hourly flight availability from Portland to Bilbao. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

When flying from Portland to Bilbao, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 3% versus a flight at noon.

Reviews of airlines servicing Bilbao

Get insights into the airlines that provide service to Bilbao. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bilbao. Reviews last updated September 11, 2025.
See what other customers who have flown with Delta and KLM from Portland to Bilbao have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,385 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Portland to Bilbao. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Portland to Bilbao?

    For as low as $726, KLM can have you in Bilbao from Portland in 12h 55m. Airlines will cover a distance of 5265 mi.

  • What are the cheapest airlines flying from Portland to Bilbao round-trip?

    Flying on Delta is currently your cheapest option to Bilbao, with prices starting at $633. Another option worth looking into is KLM, starting at $814 round trip. Users have found that Delta is 37% cheaper than the other options available to this destination.

  • Can I find deals for flights from Portland to Bilbao that include hotel bookings?

    Yes. In addition to deals on Portland to Bilbao flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Bilbao?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Bilbao.

  • Can I find deals for business class flights from Portland to Bilbao?

    Yes. Cheapflights offers flight deals from Portland to Bilbao by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland to Bilbao?

    Currently, January is the cheapest month in which you can book a flight from Portland to Bilbao (average of $541). Flying from Portland to Bilbao in June is currently the most expensive (average of $1,136). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Portland to Bilbao

See prices for flight routes from nearby airports that may be better suited for you.
Boise to Bilbao flights

Top 2 airlines flying from Portland to Bilbao

Discover the top 2 airlines that operate flights from Portland to Bilbao. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$633Average$1,099FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$814Average$1,080FlexibilityNo cancel feeOn-time75%

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