What is the cheapest airline that flies from Portland to Bilbao?

Delta is the most popular carrier operating from Portland to Bilbao

When did momondo last update prices for flights from Portland Airport to Bilbao Airport?

Prices for flights from Portland Airport to Bilbao Airport are updated daily.

How many operators does momondo search for flights from Portland Airport to Bilbao Airport?

The number of operators available for flights from Portland Airport to Bilbao Airport is 2 as of November 2025.

How old do you have to be to fly from Portland Airport to Bilbao Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Bilbao Airport.

What documentation or ID do you need to fly to Bilbao Airport?

The travel and health documents you'll need for your trip to Bilbao Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bilbao Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$353 Cheap Flights from Portland to Bilbao in 2025/26

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Find the cheapest flights from Portland to Bilbao

Round-trip

One-way

Cheap round-trip flights

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5:33 am - 11:15 pmPDX-BIO

32h 42m2 stops

6:45 am - 12:59 amBIO-PDX

27h 14m2 stops

$1,084Multiple Airlines

Find Deal

Wed, Dec 24 - Wed, Dec 31

10:21 pm - 8:30 amPDX-BIO

25h 09m2 stops

9:15 am - 12:54 amBIO-PDX

24h 39m2 stops

$1,144American Airlines

Find Deal

Tue, Dec 23 - Tue, Dec 30

8:01 am - 8:30 amPDX-BIO

16h 29m2 stops

7:10 am - 10:46 pmBIO-PDX

23h 36m2 stops

$1,152Iberia

Find Deal

Tue, Mar 10 - Thu, Mar 12

10:15 am - 11:30 amPDX-BIO

17h 15m2 stops

11:55 am - 12:25 pmBIO-PDX

32h 30m1 stop

$1,243Delta

Find Deal

Tue, Mar 10 - Thu, Mar 12

10:15 am - 11:30 amPDX-BIO

17h 15m2 stops

11:55 am - 10:46 pmBIO-PDX

18h 51m2 stops

$1,253Delta

Find Deal

Tue, Mar 10 - Thu, Mar 12

5:33 am - 11:15 pmPDX-BIO

32h 42m2 stops

6:45 am - 9:49 pmBIO-PDX

24h 04m2 stops

$1,274Multiple Airlines

Find Deal

Thu, Dec 18 - Wed, Dec 24

11:10 am - 11:30 amPDX-BIO

16h 20m2 stops

5:20 pm - 12:25 pmBIO-PDX

27h 05m1 stop

$1,300KLM

Find Deal

Tue, Mar 10 - Thu, Mar 12

7:30 am - 11:20 pmPDX-BIO

54h 50m3 stops

11:35 am - 11:58 amBIO-PDX

57h 23m2 stops

$1,514United Airlines

Find Deal

Tue, Dec 23 - Tue, Dec 30

7:30 am - 6:05 pmPDX-BIO

25h 35m3 stops

12:50 pm - 10:40 pmBIO-PDX

42h 50m2 stops

$1,553United Airlines

Find Deal

Wed, Dec 24 - Wed, Dec 31

1:59 pm - 5:20 pmPDX-BIO

18h 21m2 stops

11:55 am - 11:25 amBIO-PDX

32h 30m1 stop

$1,843KLM

Find Deal

Fri, Nov 21 - Sun, Nov 30

American Airlines flights from Portland to Bilbao

Our best American Airlines deals on Portland to Bilbao flight tickets

American Airlines

Dec 23

PDX10:21 pmPortland

25h 09m

2 stops

BIO8:30 amBilbao

Dec 30

BIO9:15 amBilbao

24h 39m

2 stops

PDX12:54 amPortland

$1,144

Find similar

American Airlines

Dec 22

PDX12:49 amPortland

22h 41m

2 stops

BIO8:30 amBilbao

Dec 30

BIO9:15 amBilbao

24h 39m

2 stops

PDX12:54 amPortland

$1,799

Find similar

American Airlines

Nov 20

PDX12:59 amPortland

26h 51m

2 stops

BIO12:50 pmBilbao

Nov 30

BIO9:15 amBilbao

21h 00m

2 stops

PDX9:15 pmPortland

$5,634

Find similar

Delta flights from Portland to Bilbao

Our best Delta deals on Portland to Bilbao flight tickets

Delta

Mar 10

PDX10:15 amPortland

17h 15m

2 stops

BIO11:30 amBilbao

Mar 12

BIO11:55 amBilbao

32h 30m

1 stop

PDX12:25 pmPortland

$1,243

Find similar

Delta

Mar 10

PDX10:15 amPortland

17h 15m

2 stops

BIO11:30 amBilbao

Mar 12

BIO11:55 amBilbao

18h 51m

2 stops

PDX10:46 pmPortland

$1,253

Find similar

Delta

Dec 24

PDX1:25 pmPortland

12h 55m

1 stop

BIO11:20 amBilbao

Dec 31

BIO6:50 amBilbao

13h 35m

1 stop

PDX11:25 amPortland

$1,485

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Wed 12/24

5:33 am-11:15 pm

2 stops32h 42m

Bilbao

Wed 12/31

6:45 am-12:59 am

2 stops27h 14m

$1,084

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Tue 12/23

10:21 pm-8:30 am

2 stops25h 09m

Bilbao

Tue 12/30

9:15 am-12:54 am

2 stops24h 39m

$1,144

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Tue 3/10

8:01 am-8:30 am

2 stops16h 29m

Bilbao

Thu 3/12

7:10 am-10:46 pm

2 stops23h 36m

$1,152

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Tue 3/10

10:15 am-11:30 am

2 stops17h 15m

Bilbao

Thu 3/12

11:55 am-12:25 pm

1 stop32h 30m

$1,243

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Tue 3/10

10:15 am-11:30 am

2 stops17h 15m

Bilbao

Thu 3/12

11:55 am-10:46 pm

2 stops18h 51m

$1,253

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Thu 12/18

5:33 am-11:15 pm

2 stops32h 42m

Bilbao

Wed 12/24

6:45 am-9:49 pm

2 stops24h 04m

$1,274

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Tue 3/10

11:10 am-11:30 am

2 stops16h 20m

Bilbao

Thu 3/12

5:20 pm-12:25 pm

1 stop27h 05m

$1,300

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Tue 12/23

7:30 am-11:20 pm

3 stops54h 50m

Bilbao

Tue 12/30

11:35 am-11:58 am

2 stops57h 23m

$1,514

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Wed 12/24

7:30 am-6:05 pm

3 stops25h 35m

Bilbao

Wed 12/31

12:50 pm-10:40 pm

2 stops42h 50m

$1,553

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Fri 11/21

1:59 pm-5:20 pm

2 stops18h 21m

Bilbao

Sun 11/30

11:55 am-11:25 am

1 stop32h 30m

$1,843

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portland to Bilbao

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Bilbao?

The cheapest day to depart from Portland to Bilbao is on a Tuesday. Travelers who choose to depart for Bilbao on a Tuesday will often find tickets for as low as $952. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $1,705. These prices are subject to change though, so be sure to set up a Price Alert for flights to Bilbao.

What is the cheapest time of day to depart on your flight to Bilbao?

Our most recent data shows that the best time of day to fly to Bilbao is in the afternoon. Flights from Portland to Bilbao during this time can be as low as $1,226. At noon is when there is more demand to fly to Bilbao, so prices are often more expensive at around $1,254 per ticket.

When to book flights from Portland to Bilbao

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Bilbao according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Portland to Bilbao (PDX to BIO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Bilbao

Direct flights	None

There are no direct flights from Portland to Bilbao. There are no popular flight routes from Portland to Bilbao.

Search flight deals

How far is Portland to Bilbao by plane?
There are 5272.0 mi between Portland and Bilbao. In terms of flight time, this usually takes a little over 12h 55m.
When did momondo last update prices for flights from Portland Airport to Bilbao Airport?
Prices for flights from Portland Airport to Bilbao Airport are updated daily.
How many operators does momondo search for flights from Portland Airport to Bilbao Airport?
The number of operators available for flights from Portland Airport to Bilbao Airport is 2 as of November 2025.
How old do you have to be to fly from Portland Airport to Bilbao Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Bilbao Airport.
What documentation or ID do you need to fly to Bilbao Airport?
The travel and health documents you'll need for your trip to Bilbao Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bilbao Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Portland to Bilbao?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Portland to Bilbao is Delta (63% of total bookings). The next most popular airline is KLM (37%).

Best airlines flying from Portland to Bilbao

Compare and see reviews for airlines that fly from Portland to Bilbao with momondo

Airline	Rating	Free Cancellation	Price
KLM	PriceFrom $576	Free Cancellation	Rating 7.7 1,410 reviews		Search KLM flights
Delta	PriceFrom $678	Free Cancellation	Rating 7.9 8,004 reviews		Search Delta flights

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Why use momondo?

Why should I use momondo to find a flight deal from Portland to Bilbao?

It is quick and easy to find Portland to Bilbao flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Bilbao that suits you.

Can I find flights from Portland to Bilbao with flexible booking policies on momondo?

Yes. All flights to Bilbao from Portland on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Portland to Bilbao?

momondo helps you find the best flight between Portland and Bilbao by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Portland to Bilbao right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Bilbao, momondo offers a useful price alert feature which will track prices for flights to Bilbao from Portland and alert you when they change.