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

United Airlines 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.

$491 Cheap Flights from Portland to Bilbao in 2025/26

1 adult

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Find the cheapest flights from Portland to Bilbao

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Cheap round-trip flights

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7:10 am - 4:30 pmPDX-BIO

24h 20m2 stops

6:50 am - 10:07 amBIO-PDX

36h 17m2 stops

$491Delta

Find Deal

vie., ene. 16 - mar., ene. 20

7:45 am - 11:20 pmPDX-BIO

30h 35m2 stops

11:35 am - 11:57 amBIO-PDX

33h 22m2 stops

$505United Airlines

Find Deal

vie., ene. 16 - mar., ene. 20

11:10 am - 5:20 pmPDX-BIO

21h 10m2 stops

5:20 pm - 11:25 amBIO-PDX

27h 05m1 stop

$531KLM

Find Deal

vie., ene. 16 - mar., ene. 20

1:25 pm - 4:30 pmPDX-BIO

18h 05m1 stop

5:20 pm - 11:25 amBIO-PDX

27h 05m1 stop

$632KLM

Find Deal

vie., ene. 16 - mar., ene. 20

1:30 pm - 4:30 pmPDX-BIO

18h 00m2 stops

5:20 pm - 11:25 amBIO-PDX

27h 05m1 stop

$637KLM

Find Deal

vie., ene. 16 - mar., ene. 20

1:25 pm - 4:30 pmPDX-BIO

18h 05m1 stop

5:20 pm - 11:25 amBIO-PDX

27h 05m1 stop

$767KLM

Find Deal

vie., ene. 16 - mar., ene. 20

3:18 pm - 11:15 pmPDX-BIO

22h 57m2 stops

9:15 am - 11:07 pmBIO-PDX

22h 52m2 stops

$989Multiple Airlines

Find Deal

mar., may. 19 - mar., may. 26

3:25 pm - 5:50 pmPDX-BIO

17h 25m2 stops

7:15 am - 10:56 pmBIO-PDX

24h 41m3 stops

$1,218Multiple Airlines

Find Deal

mar., may. 19 - mar., may. 26

1:05 pm - 10:45 pmPDX-BIO

24h 40m1 stop

12:00 pm - 11:10 amBIO-PDX

32h 10m1 stop

$1,463KLM

Find Deal

mar., may. 19 - mar., may. 26

1:05 pm - 4:30 pmPDX-BIO

18h 25m1 stop

12:00 pm - 11:10 amBIO-PDX

32h 10m1 stop

$1,464KLM

Find Deal

mar., may. 19 - mar., may. 26

United Airlines flights from Portland to Bilbao

Our best United Airlines deals on Portland to Bilbao flight tickets

United Airlines

Jan 16

PDX3:50 pmPortland

22h 30m

2 stops

BIO11:20 pmBilbao

Jan 20

BIO11:35 amBilbao

40h 21m

2 stops

PDX6:56 pmPortland

$504

Find similar

United Airlines

Jan 16

PDX7:45 amPortland

30h 35m

2 stops

BIO11:20 pmBilbao

Jan 20

BIO11:35 amBilbao

33h 22m

2 stops

PDX11:57 amPortland

$505

Find similar

KLM flights from Portland to Bilbao

Our best KLM deals on Portland to Bilbao flight tickets

KLM

Jan 16

PDX11:10 amPortland

21h 10m

2 stops

BIO5:20 pmBilbao

Jan 20

BIO5:20 pmBilbao

27h 05m

1 stop

PDX11:25 amPortland

$531

Find similar

KLM

Jan 16

PDX1:25 pmPortland

18h 05m

1 stop

BIO4:30 pmBilbao

Jan 20

BIO5:20 pmBilbao

27h 05m

1 stop

PDX11:25 amPortland

$632

Find similar

KLM

Jan 16

PDX1:30 pmPortland

18h 00m

2 stops

BIO4:30 pmBilbao

Jan 20

BIO5:20 pmBilbao

27h 05m

1 stop

PDX11:25 amPortland

$637

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandBilbao

PDX - BIO

PDXBIO

Portland

vie. 1/16

7:10 am-4:30 pm

2 stops24h 20m

Bilbao

mar. 1/20

6:50 am-10:07 am

2 stops36h 17m

$491

PortlandBilbao

PDX - BIO

PDXBIO

Portland

vie. 1/16

7:45 am-11:20 pm

2 stops30h 35m

Bilbao

mar. 1/20

11:35 am-11:57 am

2 stops33h 22m

$505

PortlandBilbao

PDX - BIO

PDXBIO

Portland

vie. 1/16

11:10 am-5:20 pm

2 stops21h 10m

Bilbao

mar. 1/20

5:20 pm-11:25 am

1 stop27h 05m

$531

PortlandBilbao

PDX - BIO

PDXBIO

Portland

vie. 1/16

1:25 pm-4:30 pm

1 stop18h 05m

Bilbao

mar. 1/20

5:20 pm-11:25 am

1 stop27h 05m

$632

PortlandBilbao

PDX - BIO

PDXBIO

Portland

vie. 1/16

1:30 pm-4:30 pm

2 stops18h 00m

Bilbao

mar. 1/20

5:20 pm-11:25 am

1 stop27h 05m

$637

PortlandBilbao

PDX - BIO

PDXBIO

Portland

vie. 1/16

1:25 pm-4:30 pm

1 stop18h 05m

Bilbao

mar. 1/20

5:20 pm-11:25 am

1 stop27h 05m

$767

PortlandBilbao

PDX - BIO

PDXBIO

Portland

mar. 5/19

3:18 pm-11:15 pm

2 stops22h 57m

Bilbao

mar. 5/26

9:15 am-11:07 pm

2 stops22h 52m

$989

PortlandBilbao

PDX - BIO

PDXBIO

Portland

mar. 5/19

3:25 pm-5:50 pm

2 stops17h 25m

Bilbao

mar. 5/26

7:15 am-10:56 pm

3 stops24h 41m

$1,218

PortlandBilbao

PDX - BIO

PDXBIO

Portland

mar. 5/19

1:05 pm-10:45 pm

1 stop24h 40m

Bilbao

mar. 5/26

12:00 pm-11:10 am

1 stop32h 10m

$1,463

PortlandBilbao

PDX - BIO

PDXBIO

Portland

mar. 5/19

1:05 pm-4:30 pm

1 stop18h 25m

Bilbao

mar. 5/26

12:00 pm-11:10 am

1 stop32h 10m

$1,464

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 11 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 17h 25m.
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 1,414 reviews		Search KLM flights
Delta	PriceFrom $678	Free Cancellation	Rating 7.9 8,002 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.